Category Sleep Science

Napping Done Right: Length, Timing & Dos and Don’ts

Napping can boost or wreck your nighttime sleep depending on how you do it. Learn the ideal length, timing, and rules.

A nightcap might help you fall asleep, but it destroys your sleep quality. Here's exactly what alcohol does to your rest.

White noise, brown noise, pink noise — which actually helps you sleep? Here's what the science says about sound and rest.

Falling asleep too fast or too slow can both signal problems. Learn what normal sleep latency looks like and what yours means.

That afternoon coffee might be wrecking your sleep. Here's how caffeine works in your body and when to stop drinking it.

Think you can catch up on sleep over the weekend? Science says it's complicated. Here's what actually happens with sleep debt.

Room temperature is one of the biggest factors in sleep quality. Find out the ideal range and how to set up your room.

Blue light from screens can delay your sleep, but the real story is more nuanced. Here's what the research actually says.

Your brain doesn't shut off when you sleep. Discover what happens during each sleep stage and why every one matters.