The human brain is more active during sleep than during the day.
28
Dieters who sleep more take off more fat that those who sleep less.
159
Staying awake for 17 hours is the same for your body as drinking 2 glasses of wine.
193
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12
"Dysania" is the state of finding it hard getting up out of bed in the morning.
33