Sleep health, explained
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Getting Started With CPAP: Your First 30 NightsThe first few weeks on CPAP shape whether it becomes a habit or ends up in a closet. We walk …Choosing a CPAP Mask: Nasal, Nasal Pillows or Full FaceThe mask is the part of CPAP you feel all night, and the wrong one is a leading reason people …CPAP Mask Fit: How to Find and Fix Air LeaksSome air is meant to escape from a CPAP mask through its vents, but leaks around the cushion can disturb …CPAP Mouth Leaks: Chin Straps, Full Face Masks and Mouth TapingIf you use a nasal mask and your mouth falls open, air rushes out, leaving you with a dry mouth …Dry Mouth and Dry Nose on CPAP: Humidifiers and Heated TubingCPAP moves a lot of air through your nose and throat, and without enough moisture that air can leave you …CPAP Rainout: Why Water Collects in Your Tube and How to Stop ItRainout is the water that condenses in your CPAP tubing or mask when warm, humid air meets a cooler hose. …Aerophagia on CPAP: Bloating, Burping and Swallowing AirSome CPAP users swallow air during the night, waking up with a swollen stomach, burping or gas. It is uncomfortable …When CPAP Pressure Feels Too Strong: Ramp, Exhale Relief and Auto MachinesFeeling like you are fighting the air when you breathe out is one of the most common early CPAP complaints. …
Sleep disorders, explained
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Sleep Hygiene That Actually WorksSleep hygiene is the set of daily habits and bedroom conditions that support good sleep. It helps most people sleep …CBT-I Explained: The First-Line Treatment for InsomniaCognitive behavioral therapy for insomnia (CBT-I) is the treatment the American Academy of Sleep Medicine recommends first for chronic insomnia …How to Fall Asleep Faster: Techniques That HelpMost healthy adults fall asleep within about 10 to 20 minutes. If it takes you much longer, we cover the …Waking Up at 3am: Why It Happens and How to Get Back to SleepBrief awakenings during the night are normal, but lying awake for an hour at 3am is not something you have …Caffeine and Sleep: How Late Is Too Late?Caffeine blocks the brain signal that builds sleepiness, and its effects can last well into the evening. We explain the …Alcohol and Sleep: Why a Nightcap BackfiresAlcohol can make you fall asleep faster, but it fragments sleep later in the night, suppresses REM sleep and worsens …Light, Screens and Blue Light: What the Evidence SaysLight is the strongest signal for your body clock. Bright light in the morning helps you sleep at night, and …The Ideal Bedroom for Sleep: Temperature, Light and NoiseA cool, dark, quiet bedroom makes it easier to fall asleep and stay asleep. We cover the temperature most experts …
Free sleep tools
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AHI CalculatorCalculate the apnea hypopnea index from the number of apneas, hypopneas and hours of sleep, and see the adult or child severity band.CPAP Pressure Unit ConverterConvert a CPAP pressure in cm H2O to hPa, mbar, kPa, mmHg and psi, or convert a pressure in hPa or mbar back to cm H2O.CPAP Compliance CalculatorCheck whether your CPAP use meets the Medicare adherence rule of 4 or more hours on at least 70 percent of nights in a 30 day period.CPAP Battery Runtime CalculatorEstimate how many hours a battery will run your CPAP from its watt-hour rating, your machine's average power draw and conversion losses.CPAP Supply Replacement CheckerPick a CPAP part and enter how many days you have used it to see the usual Medicare replacement interval and how many days are left.How Much Sleep Do I Need by AgeChoose an age group to see the recommended hours of sleep from the CDC, based on AASM consensus statements.Sleep Debt CalculatorCompare your weekly sleep against your sleep need to estimate how many hours of sleep debt you build up each week.Sleep Efficiency CalculatorWork out what percentage of your time in bed you actually spend asleep, the measure used in sleep diaries and CBT-I.
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Every guide lists its sources: sleep medicine guidelines, NIH, CDC, FDA and peer-reviewed reviews. Where evidence is thin, we say so.
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Ask the way you would ask a friend. Answers are AI-generated, grounded in our guides, and linked to them so you can read further.
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We are not a clinic. Every condition page says which symptoms deserve a doctor or a sleep specialist, and why.