You forget 90% of your dreams.
256
The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
15
If you hold farts in during the day, they'll just come out when you sleep.
16
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
The human brain is more active during sleep than during the day.
28
Honeybees never sleep.
276
People who sleep late have more mental stamina and can outperform early risers.
33