You forget 90% of your dreams.
256
There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12
The harder you concentrate on falling asleep, the less likely you are to fall asleep.
34
Some people have a "natural alarm clock" allowing them to wake up when they want. This is actually caused by a burst of the stress hormone adrenocorticotropin.
15
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
Bats sleep 18-20 hours per day.
5
Studies show that the colder the room you sleep in, the more likely you are to have a bad dream.
28
Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240