The average cat sleeps about 2/3 of the day.
203
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240
Bats sleep 18-20 hours per day.
5
Dieters who sleep more take off more fat that those who sleep less.
159
There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12
People who sleep late have more mental stamina and can outperform early risers.
33