The Military Sleep Hack That Gives You More Energy in Less Time
Discover the military sleep hack to boost your energy in less time. Learn how to optimize your sleep for better rest and productivity.
Sleep Blog
The Sleep Calculators Online blog covers sleep science, sleep health and practical ways to sleep better. Articles explain how sleep stages and REM sleep work, why trouble falling asleep and waking at night happen, how your body clock shapes when you feel sleepy, and what sleep disorders such as sleep apnea, narcolepsy and restless legs look like.
Updated articles link to the research and health sources behind them, and many pair with a free tool such as the bedtime calculator, the sleep cycle calculator or the sleep debt calculator.
Looking for something specific? Browse sleep guides by topic, all sleep calculators or our pillow reviews. The newest articles are below.
Why Do Older Adults Struggle to Sleep?
Older adults struggle to sleep mainly because aging changes the body’s sleep machinery — the internal clock shifts earlier, melatonin …
Why REM Sleep is So Important (And How to Get More of It!)
Discover why REM sleep is crucial for your brain health and learn how to improve its quality tonight.
Why You Should Never Sleep with the TV On: Effects and Healthier Alternatives
Discover the negative impacts of sleeping with the TV on, from disrupted sleep cycles to increased energy consumption, and learn …
Deep Sleep vs. Light Sleep: What’s the Difference?
Uncover the differences between deep sleep and light sleep stages. Our ultimate guide explains their roles in your health and sleep quality.
The Science of a Perfect Sleep Environment (Bedroom Optimization Guide)
Discover the science of a perfect sleep environment with our expert bedroom optimization guide. Learn how to create the ideal setting for better rest.
How Much Deep Sleep Do You Need? Deep, REM And Light Sleep By Age
Quick Answer: No official body sets a required number of deep or REM minutes. The American Thoracic Society lists typical …
REM Sleep Behavior Disorder (RBD): Symptoms, Causes And Safety
REM sleep behavior disorder (RBD) is a sleep problem in which you physically or vocally act out your dreams. Cleveland …
Hypnic Jerk: What Sleep Starts Are And What Is Known
Quick Answer: A hypnic jerk, or sleep start, is a sudden muscle twitch as you fall asleep. Researchers describe it …
Alternatives To CPAP: Options For Sleep Apnea Without A Mask
Quick Answer: The main alternatives to CPAP are oral appliances, side sleeping, lifestyle changes, nerve stimulation, surgery and mouth exercises. …