Sea otters hold hands while sleeping so they don’t drift away from each other.
104
You forget 90% of your dreams.
256
The harder you concentrate on falling asleep, the less likely you are to fall asleep.
34
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240
Lack of water is the #1 trigger of daytime fatigue.
148