What’s keepingyou up?

Waking at 3 AM is normal. Staying awake is the part worth fixing. The sleep science behind the worst hour of the night, and what to do while you are lying in it.

Silence is not restful for everyone, and there is a physical reason. Your hearing has no off switch, and brain research shows how much of it stays on watch while you sleep.

Night shift workers sleep 1 to 4 hours less than everyone else. The daytime world is louder, brighter, and busier. Here is what the research says actually works.