The higher someone’s I.Q. the more likely they are to be sleep deprived.
29
The harder you concentrate on falling asleep, the less likely you are to fall asleep.
34
There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12
In China, teachers allow children to sleep in class for around 20 minutes to help improve their learning.
13
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Termites work 24 hours per day and they do not sleep.
57
You burn more calories sleeping than you do watching television.
348