Lack of water is the #1 trigger of daytime fatigue.
148
Sea otters hold hands while sleeping so they don’t drift away from each other.
104
Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240
If you hold farts in during the day, they'll just come out when you sleep.
16
You can reschedule your sleeping pattern by not eating 12-16 hours before you want to be awake. Upon eating after this time period, your internal clock will reset to a new day, with the time of your first meal being interpreted as "morning".
11
The harder you concentrate on falling asleep, the less likely you are to fall asleep.
34