You know that snoring and feeling tired aren’t just minor annoyances, but what do they really mean for your health? The answer often lies in a number called the AHI score. Calculated during a sleep study, the Apnea-Hypopnea Index (AHI) measures how many times your breathing stops or becomes dangerously shallow each hour. This score is the gold standard for diagnosing AHI sleep apnea. A higher score indicates more frequent disruptions, which places significant stress on your heart and brain. Understanding what your AHI score means is essential for recognizing the potential health risks and taking proactive steps toward effective treatment and a healthier future.

Key Takeaways

  • Your AHI Score Is a Sleep Report Card: This number represents the average breathing interruptions you have per hour. A score under 5 is normal, while scores of 5-14 (mild), 15-29 (moderate), and 30+ (severe) are used to classify sleep apnea.
  • The AHI Isn’t the Whole Story: This single number doesn’t account for how low your oxygen drops or, more importantly, how you feel. A true diagnosis involves a specialist looking at your symptoms and other data to get a complete picture.
  • An AHI of 5+ Is Your Cue to Act: Consider a score of 5 or more your signal to consult a sleep specialist. It’s the essential first step toward getting a diagnosis and creating a personalized treatment plan to restore your sleep and protect your health.

What Is the Apnea-Hypopnea Index (AHI)?

If you’ve been looking into sleep apnea, you’ve probably come across the term AHI. Think of the Apnea-Hypopnea Index (AHI) as a report card for your breathing during sleep. It’s the primary and most widely used measurement for diagnosing and determining the severity of obstructive sleep apnea. In simple terms, your AHI score represents the average number of times your breathing pauses or becomes very shallow per hour while you sleep. This single number gives you and your doctor a snapshot of your sleep quality.

When you have snoring and sleep apnea, your airway can become partially or fully blocked, interrupting your breathing and your sleep. The AHI is a scale that quantifies these interruptions, helping providers diagnose and rank the severity of the condition. A higher AHI score indicates more frequent breathing disruptions, which usually points to a more significant case of sleep apnea. This number is crucial because it gives your doctor a clear, objective picture of what’s happening overnight. It helps them confirm a diagnosis and create a treatment plan that’s right for you. Understanding your AHI is the first step toward understanding your sleep health and finding a path to more restful nights.

Apneas vs. Hypopneas: What’s the Difference?

Your AHI score is calculated by adding up two different kinds of breathing events: apneas and hypopneas. For an event to be counted, it needs to last for at least 10 seconds.

An apnea is a complete pause in breathing. Think of it as a total blockage of your airway. For that 10-second (or longer) window, you aren’t moving any air at all.

A hypopnea is a partial blockage. Your breathing doesn’t stop completely, but it becomes significantly shallower than normal, usually by at least 30%. These shallow breaths are often not enough to keep your blood oxygen levels stable, causing them to drop. Both events disrupt your sleep, even if you don’t remember them happening.

How Doctors Calculate Your AHI Score

Your AHI score isn’t a guess; it’s calculated from data gathered during a sleep study. This can be an in-lab test called polysomnography or a more convenient at-home sleep apnea test. During the study, sensors monitor your breathing, oxygen levels, and other vital signs.

The calculation itself is straightforward. Your doctor will count the total number of apneas and hypopneas recorded during the study. Then, they divide that total by the number of hours you were asleep. For example, if you had 100 breathing events (a mix of apneas and hypopneas) over 8 hours of sleep, your AHI score would be 12.5. This simple number provides a powerful insight into your sleep quality and is the foundation for your diagnosis.

Decoding Your AHI Score

After a sleep study, you’re given a lot of information, but the number that stands out most is your AHI score. Think of this score as a simple way to measure how often your breathing is interrupted while you sleep. It’s the main metric doctors use to determine if you have sleep apnea and, if so, how severe it is. Understanding your score is the first step toward understanding your sleep health and finding the right path forward.

The Apnea-Hypopnea Index isn’t just a random number; it represents the average number of apneas (pauses in breathing) and hypopneas (shallow breathing) you experience per hour of sleep. These events are what cause your body to jolt itself awake, even if you don’t remember it, leading to fragmented sleep and that all-too-familiar feeling of daytime exhaustion. The AHI scale is broken down into four main categories: normal, mild, moderate, and severe. Each category gives your doctor insight into the potential health impacts and helps guide them toward the most effective treatment for your specific needs. It’s not a grade you pass or fail, but rather a guidepost on your journey to better sleep and better health.

Normal: Fewer Than 5 Events Per Hour

If your AHI score is less than five, congratulations, your breathing is considered normal and stable during sleep. This means you experience fewer than five breathing interruptions per hour, which is not enough to significantly disrupt your sleep quality or pose a risk to your overall health. Everyone has an occasional pause or shallow breath during the night, so a score of zero is rare and not expected. A result in this range indicates that you likely don’t have sleep apnea. For those undergoing treatment, getting their AHI score into this normal range is the ultimate goal.

Mild Sleep Apnea: 5–14 Events Per Hour

An AHI score between 5 and 14 events per hour places you in the mild sleep apnea category. While the word “mild” might sound reassuring, it’s important to take this diagnosis seriously. Experiencing up to 14 breathing interruptions every hour can still fragment your sleep and prevent you from reaching the deep, restorative stages you need. This often explains why you might feel tired during the day despite thinking you got a full night’s rest. According to the Cleveland Clinic, this level of sleep disruption can impact your quality of life and is a clear sign that it’s time to explore treatment options.

Moderate Sleep Apnea: 15–29 Events Per Hour

When your AHI score falls between 15 and 29, you have moderate sleep apnea. At this stage, the interruptions are more frequent, happening about every two to four minutes. The symptoms are often more pronounced, with many people experiencing significant daytime sleepiness that can interfere with work and daily activities. More importantly, the health risks become more serious. The strain that moderate sleep apnea puts on your body can increase your risk for cardiovascular problems like high blood pressure. This score is a strong indicator that your body needs help, and a medical evaluation is necessary to prevent long-term health complications.

Severe Sleep Apnea: 30+ Events Per Hour

A score of 30 or more events per hour is classified as severe sleep apnea. This means your breathing is disrupted at least every other minute, all night long. This constant cycle of stopping breathing and waking up places immense stress on your body, especially your heart. Severe sleep apnea is a serious medical condition linked to a significantly higher risk of hypertension, heart disease, stroke, and other major health issues. If your score is in this range, it’s crucial to seek treatment right away. The good news is that highly effective treatments are available to manage snoring and sleep apnea, drastically reducing your AHI and protecting your health.

How Is Your AHI Score Measured?

To get your AHI score, your breathing needs to be monitored while you sleep. This isn’t a guess; it’s a precise calculation based on data collected during a sleep test. A healthcare professional uses this information to determine if you have sleep apnea and how severe it is. The entire process is designed to give a clear picture of your breathing patterns throughout the night, which is the first step toward diagnosing and treating snoring and sleep apnea.

There are two primary ways to measure your AHI: a formal, in-lab sleep study or a more convenient at-home sleep apnea test. The right option for you depends on your specific health situation and what your doctor needs to see. Both methods are designed to count the number of apneas and hypopneas you experience, providing the raw data needed to calculate your final AHI score and guide your treatment plan.

The In-Lab Sleep Study (Polysomnography)

The in-lab sleep study, or polysomnography, is the most comprehensive way to evaluate your sleep. You’ll spend the night in a comfortable, private room at a sleep center where a trained technician monitors you. They attach small sensors to your head and body to track brain waves, eye movements, heart rate, breathing patterns, and oxygen levels. While it might sound like a lot, this detailed data gives a complete view of your sleep architecture. This method is often recommended for patients with other medical conditions or when a more complex sleep disorder is suspected. A specialist like Dr. Michael Simmons can use this rich information to make a highly accurate diagnosis.

At-Home Sleep Apnea Tests

For many people, an at-home sleep apnea test is a convenient and effective alternative. Your doctor can provide you with a portable monitoring device that you wear for one or two nights in the comfort of your own bed. These devices are simpler than the equipment used in a lab, typically including a nasal cannula to measure airflow, a belt around your chest to track breathing effort, and a finger sensor for oxygen levels. While they don’t capture as much data as a polysomnogram, they are excellent for diagnosing most cases of obstructive sleep apnea. After your test, you return the device, and a sleep specialist analyzes the data to calculate your AHI.

Why Your Score Can Change from Night to Night

It’s completely normal for your AHI score to fluctuate from one night to the next. A single night’s score is just a snapshot, and several factors can influence the results. For example, your score might be higher if you sleep on your back, have nasal congestion from allergies, or consumed alcohol close to bedtime. Even the different stages of sleep you cycle through can affect your breathing. That’s why your doctor looks at the overall pattern rather than focusing on one specific number. If you’re using a CPAP machine, you’ll notice it reports an AHI score each morning, giving you and your doctor valuable insight into how well your therapy is working over time.

Why a High AHI Score Matters for Your Health

Receiving a high AHI score can feel unsettling, but it’s an important first step toward understanding your health. This number isn’t just about how much you snore; it’s a direct indicator of how much stress your body is under every single night. When your breathing repeatedly stops and starts, it sets off a chain reaction that can affect your heart, metabolism, and even your mental sharpness. Think of your AHI score as a critical piece of information that helps you and your doctor see the bigger picture of your well-being. It quantifies the nightly struggle your body endures, providing a clear metric to guide diagnosis and treatment. Addressing the root cause of a high AHI, which is often snoring and sleep apnea, is about more than just getting a quiet night’s sleep. It’s about protecting your long-term health from the silent damage that can occur while you rest.

The Impact on Your Heart Health

Each apnea or hypopnea event is like a brief moment of panic for your body. Your oxygen levels dip, and your brain sends a jolt to your system to start breathing again. This process spikes your blood pressure and heart rate. When this happens dozens or even hundreds of times a night, it puts a significant strain on your cardiovascular system. Over time, this nightly stress can contribute to serious conditions like high blood pressure, heart strain, and an increased risk of stroke. While a high AHI score is a major red flag, it’s important to remember that it’s one part of your overall health profile. Your doctor will consider it alongside other factors to get a complete picture.

Effects on Your Metabolism and Overall Wellness

Sleep is essential for regulating the hormones that control your metabolism, appetite, and energy use. When sleep is constantly interrupted by breathing events, this delicate hormonal balance gets thrown off. This is why untreated obstructive sleep apnea (OSA) is often linked to metabolic issues. You might find it harder to maintain a healthy weight or notice changes in your appetite. In fact, research shows that OSA is a common underlying factor in many chronic diseases, especially those related to obesity. Addressing your sleep apnea can be a powerful step in supporting your overall wellness and making it easier for your body to function at its best.

The Toll on Your Energy and Mental Clarity

Feeling exhausted even after a full night in bed is one of the most common signs of sleep apnea. Those frequent awakenings, even if you don’t remember them, prevent your brain from reaching the deep, restorative stages of sleep. This leads to that feeling of being completely drained during the day. Beyond just feeling tired, poor sleep quality and low oxygen levels can cause brain fog, difficulty concentrating, and irritability. Many people simply get used to feeling this way, but it’s not normal. Getting effective treatment can feel like a fog has lifted, restoring your energy and mental sharpness.

How Your AHI Score Guides Treatment

Your AHI score is more than just a number from your sleep study; it’s a critical guidepost for your doctor. Think of it as the starting point for creating a treatment plan that’s tailored specifically to you. Because sleep apnea affects everyone differently, the right approach depends on the severity of your condition, your anatomy, your lifestyle, and your personal preferences. A score indicating mild sleep apnea might call for a different strategy than one showing a severe case.

This is where a partnership with your sleep specialist becomes so important. They will use your AHI score, along with a complete evaluation of your health, to map out the most effective path forward. The goal is always the same: to help you breathe easily and consistently throughout the night, so you can get the restorative sleep your body needs. Let’s walk through the most common treatment options and how your AHI helps determine which one is right for you.

Lifestyle Changes and Positional Therapy

For those with a mild AHI score, the first line of defense often involves simple but powerful adjustments to your daily habits and sleep posture. Lifestyle changes like managing your weight, reducing alcohol intake before bed, and quitting smoking can have a significant impact on your breathing. These steps can decrease inflammation and pressure on your airway.

Positional therapy is another effective strategy. For many people, sleep apnea gets worse when they sleep on their back. By learning to sleep on your side, you can use gravity to your advantage, helping to keep your tongue and soft tissues from collapsing into your airway. Your doctor might recommend special pillows or wearable devices to help you maintain a side-sleeping position. These foundational treatments for snoring and sleep apnea can sometimes resolve mild cases or can be used to support other therapies.

Oral Appliance Therapy

If lifestyle changes aren’t enough, or if you have mild to moderate sleep apnea, oral appliance therapy is an excellent, non-invasive treatment option. These custom-made devices, which look similar to a sports mouthguard or a retainer, are designed to be worn only while you sleep. They work by gently shifting your lower jaw forward or holding your tongue in place.

This subtle repositioning is just enough to keep your airway open, preventing the pauses in breathing that define sleep apnea. Oral appliances are a popular and effective alternative for people who have trouble with CPAP machines. A specialist like Dr. Michael Simmons can determine if you are a good candidate and create a device that is custom-fitted for your mouth, ensuring it’s both comfortable and effective at lowering your AHI.

CPAP Therapy

Continuous Positive Airway Pressure, or CPAP, is often considered the gold standard for treating moderate to severe sleep apnea. A CPAP machine works by delivering a gentle, steady stream of air through a mask you wear over your nose or mouth while you sleep. This constant pressure acts as a splint, keeping your airway open and preventing apneas and hypopneas from occurring.

The primary goal of CPAP therapy is to bring your AHI down to a normal level, ideally below five events per hour. Modern CPAP machines are great because they can track your AHI each night, giving you and your doctor valuable data to see how well the treatment is working and make any necessary adjustments to the pressure settings.

Surgical Options

In some situations, particularly when a high AHI score points to severe sleep apnea or when other treatments haven’t provided relief, surgery may be an option. Surgical procedures for sleep apnea aim to address the specific anatomical issues that are causing the airway to collapse. This might involve removing excess tissue from the throat, such as the tonsils or uvula, or repositioning the jaw.

Surgery is typically considered only after a thorough evaluation and discussion with your medical team. It’s a significant step, and the decision to proceed depends on the unique structure of your airway and the failure of less invasive therapies. Your doctor will help you weigh the potential benefits against the risks to determine if it’s the right choice for your long-term health.

Is AHI the Whole Story?

Your AHI score is a critical piece of the puzzle when diagnosing and treating snoring and sleep apnea. It gives your doctor a clear, standardized way to measure the frequency of breathing disruptions while you sleep. However, it’s important to know that this number doesn’t tell the whole story. Think of it as a headline; it gives you the main idea, but you need to read the article for the important details.

Many people find that their AHI score doesn’t perfectly match how they feel day to day. You might have a “mild” score but feel completely exhausted, or a “severe” score with fewer symptoms than you’d expect. This is because the AHI is just one data point. To truly understand your sleep health, we need to look at other factors, including how your breathing events affect your body’s oxygen levels, the specific type of events you’re having, and, most importantly, how you actually feel. Considering these other elements gives us a much more complete and accurate picture of what’s happening when you sleep.

Looking Beyond AHI: Oxygen Levels

One of the biggest limitations of the AHI score is that it doesn’t measure the impact of each breathing event on your blood oxygen levels. Your body needs a steady supply of oxygen to function, and when you stop breathing, that supply can dip. Some breathing events cause a significant drop in oxygen, while others cause only a minor dip. The AHI score treats both of these events the same, simply adding them to the total count. However, research shows that events leading to lower oxygen levels (hypoxic events) are more stressful on your body, especially your heart and brain. A sleep specialist will analyze these oxygen desaturations alongside your AHI to assess the true severity of your condition.

The Pattern of Your Breathing Events

The AHI score is a tally of both apneas (complete pauses in breathing) and hypopneas (partial blockages or shallow breathing). While both disrupt your sleep, a complete apnea is often more severe than a partial hypopnea. The AHI formula, however, counts them as equal. This means two people could have the exact same AHI score, but one person’s score might be composed mostly of severe apneas, while the other’s is made up of milder hypopneas. Understanding the specific pattern and type of your breathing events gives your doctor a more nuanced view of your sleep apnea and helps guide the most effective treatment plan for you.

How You Feel During the Day

Perhaps the most important factor that the AHI score can’t measure is your personal experience. How do you feel when you wake up? Are you dragging yourself through the day with fatigue, brain fog, and irritability? Some people have a low AHI score but experience significant daytime sleepiness, while others have a high score but feel relatively fine. Your symptoms are a vital clue. If you feel exhausted despite a “good” AHI score, your sleep is still being disrupted in a meaningful way. This is why it’s so important to discuss your daily symptoms with a specialist like Dr. Michael Simmons, who can connect the dots between your score and your quality of life.

Understanding the Limitations of the AHI Score

While your AHI score is a standard starting point for diagnosing sleep apnea, it’s important to know that it doesn’t tell the whole story. Think of it as one chapter in a book about your sleep health, not the entire plot. The number itself gives us a general idea of severity, but it has significant blind spots. It can’t capture the full complexity of how snoring and sleep apnea affect your body and your daily life.

This is why a comprehensive evaluation with a sleep specialist is so crucial. We look beyond a single number to understand the nuances of your condition. Your symptoms, oxygen levels, and the specific patterns of your breathing events all provide critical clues. Relying only on the AHI can sometimes be misleading, and understanding its limitations is the first step toward getting a truly accurate picture of your health and finding the most effective treatment for you.

Not All Breathing Events Are Created Equal

The AHI formula has a major oversimplification: it treats every breathing event the same. Your score is a simple tally of apneas (complete pauses in breathing) and hypopneas (partial blockages), but in reality, not all events are equal. A 30-second apnea that causes a dramatic drop in your blood oxygen is far more stressful on your body than a 10-second hypopnea with a minor dip. Unfortunately, the AHI counts both of these as just one event.

This approach doesn’t account for the duration of the event or the severity of the oxygen desaturation that follows. As a result, two people with the exact same AHI score could have vastly different physiological experiences overnight. Research even highlights the pitfalls of this grading system, showing it can misrepresent the true severity of a person’s condition.

Why a “Good” Score Might Not Mean Good Sleep

Have you ever been told you have “mild” sleep apnea but still feel completely exhausted during the day? You’re not alone, and there’s a good reason for it. A low AHI score doesn’t always line up with how a person feels. You can have significant sleep fragmentation from frequent arousals that don’t quite meet the technical criteria for an apnea or hypopnea, leaving you with a “good” score but poor-quality sleep.

Furthermore, a higher AHI doesn’t always predict more severe health consequences, like heart problems. Other factors, such as the degree of oxygen loss and your existing health conditions, can be much better indicators of risk. This is why it’s so important to work with an expert like Dr. Michael Simmons, who will listen to your symptoms and look at your complete health profile, not just one number on a report.

Your Score Isn’t Set in Stone

It’s helpful to view your AHI score as a guide, not a definitive label. Many experts in sleep medicine describe the AHI as a somewhat “imprecise and crude” tool for measuring sleep apnea severity. It was a useful starting point when the field was developing, but we now have a much deeper understanding of the condition. Your score can even vary from night to night depending on factors like your sleep position, alcohol consumption, or nasal congestion.

Because of these inconsistencies, your AHI score isn’t a permanent reflection of your health. It’s a data point that helps begin a conversation. A thorough diagnosis requires a more nuanced approach that considers the full impact of sleep apnea on your body. This detailed perspective is essential for creating a personalized and effective sleep apnea treatment plan that addresses your unique needs.

How to Discuss Your AHI Score with Your Doctor

Getting your AHI score is a major step, but it’s just the beginning of a conversation. It’s easy to feel a little overwhelmed by the numbers and medical terms, but try to see this as a positive turning point. You now have a concrete piece of information to work with. Think of your AHI score not as a final grade, but as a starting point for a productive discussion with your doctor. This is your opportunity to partner with a specialist, like the team at Encino Sleep and TMJ, to understand what’s happening while you sleep and create a plan to improve your health.

To make the most of your appointment, it helps to come prepared. Your doctor will explain the clinical side of things, but your questions and personal observations provide crucial context that a sleep study alone can’t capture. How do you feel when you wake up? Are you tired during the day? Sharing these details helps paint a complete picture. By taking an active role, you can ensure you leave the office with a clear understanding of your diagnosis and a confident path forward. This collaborative approach is the most effective way to find a sleep apnea treatment that truly works for you and your lifestyle.

Questions to Ask at Your Appointment

Walking into your appointment with a few questions ready can make a world of difference. It helps you focus the conversation on what matters most to you and ensures you don’t forget anything important in the moment. Consider this your personal checklist for a more effective consultation.

Here are a few key questions to get you started:

  • What category does my AHI score fall into (mild, moderate, or severe)?
  • How do my symptoms match what the sleep test showed?
  • Did my oxygen levels drop during the night, and what does that mean?
  • Based on these results, what are the best treatment options for me?
  • How will we know if the treatment is working, and what are the next steps?

What to Track Between Visits

Your treatment journey doesn’t end when you leave the doctor’s office. If you begin CPAP therapy, your machine will become a valuable source of information. It collects data every night, including your nightly AHI score, mask leak rate, and how many hours you used the device. Paying attention to this information is key to making your treatment successful.

By tracking these metrics, you can spot patterns and identify challenges early on. For example, a consistently high AHI score or a frequent mask leak are signs that your therapy may need a small adjustment. Keeping a simple log of this CPAP therapy data and noting how you feel each day gives you and your doctor the information needed to fine-tune your treatment for better, more consistent results.

Taking the Next Step: When to See a Sleep Specialist

If you’ve gone through a sleep study and now have an AHI score in hand, you might be wondering, “What now?” Or maybe you haven’t had a test yet, but your own daytime exhaustion or a partner’s complaints about your snoring have you concerned. In either case, knowing when to see a professional is the most important step you can take for your health.

The key to understanding the severity of sleep apnea is a metric called the apnea-hypopnea index (AHI). This score, calculated from a sleep study, counts the number of times you stop breathing (apneas) or have shallow breathing (hypopneas) per hour of sleep. It’s the primary tool doctors use to diagnose and classify sleep apnea.

Here’s the simple takeaway: if your AHI score is 5 or higher, it’s time to talk to an expert. While a score under 5 is considered normal, anything above that indicates some level of sleep apnea.

  • Mild Sleep Apnea: 5–14 events per hour
  • Moderate Sleep Apnea: 15–29 events per hour
  • Severe Sleep Apnea: 30+ events per hour

A sleep specialist will use your score to assess the severity of your condition and create a personalized treatment plan. The goal isn’t just to get a diagnosis; it’s to find a solution that works for you. Effective treatment aims to bring your AHI score back down to a normal level (below 5), helping you get the restorative sleep you need and reducing the long-term health risks associated with sleep apnea. If you’re experiencing symptoms or have a score that concerns you, it’s time to consult a sleep specialist and start your journey toward better sleep and better health.

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Frequently Asked Questions

My AHI score is in the “mild” range. Does that mean I don’t need treatment? Not necessarily. While the word “mild” might sound reassuring, experiencing 5 to 14 breathing interruptions every hour can still prevent you from getting restorative sleep. This often explains why you might feel tired during the day or struggle with focus. It’s important to view a mild diagnosis as a clear signal that your sleep is being disrupted, and it’s the perfect time to talk with a specialist about treatment options to prevent potential long-term health effects.

Can I lower my AHI score without using a CPAP machine? Yes, for many people, there are very effective alternatives to CPAP. For mild to moderate sleep apnea, custom-fit oral appliances are a popular and successful treatment. These devices work by gently repositioning your jaw to keep your airway open while you sleep. Additionally, lifestyle adjustments like managing your weight, changing your sleep position, and avoiding alcohol before bed can also have a significant impact on your score, either alone or in combination with other therapies.

Why does my AHI score seem to change from night to night? It’s completely normal for your AHI score to fluctuate. A single night’s score is just a snapshot, and many factors can influence it, such as your sleeping position, nasal congestion from allergies, or whether you had a drink before bed. This is why doctors and sleep specialists look at the overall trend of your AHI over time, rather than focusing on the number from one specific night. It gives a more accurate picture of your sleep health.

Is it possible to have a normal AHI score but still feel tired all the time? Yes, this is definitely possible. The AHI score is a specific measurement that only counts events that meet a strict definition for an apnea or hypopnea. Your sleep can still be fragmented by other events, like frequent arousals, that don’t get counted in the score. If you feel exhausted despite having a “normal” AHI, it’s a vital piece of information to share with your doctor, as it suggests something is still disrupting your sleep quality.

What is the main goal of treatment in relation to my AHI score? The primary goal of any sleep apnea treatment, whether it’s an oral appliance or CPAP, is to bring your AHI score down to a normal level, which is consistently below five events per hour. Achieving this means your breathing is stable throughout the night, allowing your body and brain to get the deep, restorative sleep they need. This not only helps you feel more energized during the day but also significantly reduces the long-term health risks associated with sleep apnea.