Lack of water is the #1 trigger of daytime fatigue.
148
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
People who sleep late have more mental stamina and can outperform early risers.
33
The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
15
Bats sleep 18-20 hours per day.
5
Honeybees never sleep.
276
The average person falls asleep in seven minutes.
115
Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240