47% of people have a nightmare at least once a month.
186
The strangers in your dreams are actually people that you've seen in real life.
50
The average cat sleeps about 2/3 of the day.
203
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
If you hold farts in during the day, they'll just come out when you sleep.
16
The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
15
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23