Is 90 minutes of REM sleep good?

“There’s an idea that everyone sleeps in 90-minute cycles but that’s an average, not a rule,” says Winter. “That means your REM cycle might be longer or shorter than 90 minutes. So you shouldn’t feel like you’ll wake up feeling more restored if you wake up five minutes later or earlier.” Phew.

Is the 90-minute rule true?

The science behind the 90-minute rule The 90 minutes of ‘extra’ sleep we get between snoozes is actually a proper sleep cycle, allowing you to wake up after getting REM sleep and not in between.

Why does REM sleep get longer?

While we’re asleep the human body goes through several sleep cycles (normally 3-5 per night). Within each cycle, the REM stage usually comes last, following light and deep sleep. REM cycles then get longer as the night progresses, with the final one often lasting up to an hour.

How many minutes does REM sleep last?

Usually, REM sleep arrives about an hour and a half after you go to sleep. The first REM period lasts about 10 minutes. Each REM stage that follows gets longer and longer. The amount of REM sleep you experience changes as you age.

Is REM light or deep?

Rapid eye movement (REM) sleep is the deepest stage of sleep. As the name suggests, the irises of your eyes move rapidly during this stage. It is the fourth stage of sleep. This happens approximately 90 minutes after falling asleep.

Do humans sleep in 90 minute cycles?

The sleep cycle: A sleep cycle lasts about 90 minutes, and during that time we move through five stages of sleep. The first four stages make up our non-rapid eye movement (NREM) sleep, and the fifth stage is when rapid eye movement (REM) sleep occurs.

What time should you sleep in REM?

Usually, REM sleep happens 90 minutes after you fall asleep. The first period of REM typically lasts 10 minutes. Each of your later REM stages gets longer, and the final one may last up to an hour. Your heart rate and breathing quickens.