The average person falls asleep in seven minutes.
115
You forget 90% of your dreams.
256
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
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
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193