Bats sleep 18-20 hours per day.
5
Those who get out of bed by 7am are more likely to be thinner and happier.
20
You burn more calories sleeping than you do watching television.
348
The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
15
There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12
Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
149