Studies show that the colder the room you sleep in, the more likely you are to have a bad dream.
28
Lack of water is the #1 trigger of daytime fatigue.
148
The harder you concentrate on falling asleep, the less likely you are to fall asleep.
34
You burn more calories sleeping than you do watching television.
348
The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
15
Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240