Sleep Science Blog

Lifestyle

Research-backed guides on REM sleep, deep sleep, sleep supplements, temperature, and everything that affects your sleep quality.

Person lying in a dark bedroom lit only by a phone screen

Lifestyle

Phones, Screens and REM Sleep: What Scrolling at Night Really Costs You

Blue light gets the blame, but the bigger issue may be what screens do to your bedtime and your brain. Here is what research suggests and a realistic plan for evenings.

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Steaming mug of coffee on a wooden table in warm light

Lifestyle

Caffeine and REM Sleep: How Your Coffee Habit Affects Your Night

Caffeine can linger in your system for hours after your last cup. Here is how it affects sleep, what that means for REM, and how to find a cutoff time that works for you.

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The Easiest Way to Get More REM Sleep Starts Tonight

A cooler sleep surface can make hot nights more comfortable. The Good Sleep System heats or cools your bed all night, without a subscription.

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