Five stages of sleep

Formerly the Sleepytime Sleep Cycle Calculator, this tool will tell you exactly what time to fall asleep and wake up for optimal performance

Our nightly sleep is composed of a number of sleep cycles, each of which is made up of different stages. It is now understood that we pass through five stages of sleep as we fall from wakefulness, with REM sleep the final of these stages. These stages progress in cycles, moving through stage 1 to REM sleep and then back to stage 1. The progress of each cycle lasts around 90 minutes in adults and 30–40 minutes in children. #sleepcycle #sleepstages

The typical sleep pattern has four stages: 1, 2, 3, and rapid eye movement (REM) sleep. These stages are usually cyclical and start with 1 t...

Want to learn about how sleep works or what happens in the body during deep sleep? Learn more about sleep mechanics and the four stages of sleep.

hypnogram showing stages of sleep.

iflscience

The sleep cycle is divided into five distinct stages of sleep and each of these stages has its own effects on the body. Learn more.

There are four stages of sleep divided into two categories: REM sleep and non-REM (NREM) sleep. Learn what's going on in your brain during each stage.

Your body fits five stages into a healthy night's rest. If these phases are interrupted or don't occur due to a physiological problem, you may feel tired and sleep-deprived even after eight hours of shut-eye. Getting the right amounts and types of sleep is important to your circadian rhythm and your overall health.

In 1953, Dr. Dement helped classify the five stages of sleep by distinguishing REM sleep. Here, learn from him and his Stanford students about the two types of sleep and their 5 stages.

Read this helpful guide to see how much sleep you need from babies to adults.

Don't underestimate the power of sleep! Learn how getting enough sleep can drastically improve your health and help prevent various health issues.

If you're looking for a side gig, getting paid to sleep can be a great way to earn extra cash. Learn how to get paid to sleep and where to find opportunities.

Understand each of the stages of sleep, your sleep cycles, and how to make the most out of every night’s rest for better health.

"Sleep Tips for Your 30s" 😴💤 Discover essential sleep habits for better rest: • Invest in a comfy mattress • Stick to a consistent schedule • Stay hydrated • Use "Do Not Disturb" mode Enhance your sleep quality today! Visit sleepyhero.com for more tips and tricks. Click the link to transform your sleep habits now! #SleepTips #HealthyHabits #BetterSleep #SelfCare

One in five U.S. adults shows signs of chronic sleep deprivation, and a shortage of sleep has been linked to health problems as different as diabetes and Alzheimer’s disease. Recent studies have found some interesting connections between illness and what is happening in our brains as we snooze.

We've built a guide to help you learn how to sleep better at night. With these tips for better sleep, you'll be catching z’s in no time!