Sleep Science
Every Sleep Science article on Fall Asleep Tonight, newest first.
Sleep Science articles
The Dream You Had Ten Minutes Ago Is Already Leaving
You wake up with a whole movie in your head, and by the time the kettle boils it's gone. What the brain does during REM sleep, why dreams fade so fast, and what research says helps you keep them.
Night Owl and Early Bird Are Just Two of at Least Six Chronotypes
Decades of chronotype research point to more than a lark-or-owl split. What the data on internal body clocks actually shows, and where you might land in it.
Groggy After a Full Night's Sleep? That's Sleep Inertia, Not Bad Sleep
That thick fog for the first 20 minutes after waking has a name and a real physiological cause, and it says almost nothing about how well you slept the night before.
The First 90 Minutes of Sleep Do the Heaviest Lifting
A bad start to the night costs you more than a bad middle or end does, and your sleep tracker's deep sleep graph probably isn't broken, even when the number looks low.
Why Some People Need 9 Hours of Sleep and Others Feel Totally Fine on 6
A rare gene mutation lets some people thrive on 6.25 hours of sleep with zero downsides. Why sleep need has a real biological range, and how to find your own number.
Not sure what a sleep term means? Check the glossary.