Honeybees never sleep.
276
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
A new parent will lose about 1055.6 hours of sleep in the first year of their child's life - almost 44 days!
6
Sleeping on the job is acceptable in Japan. It is viewed as exhaustion from working hard. Some people fake it to look committed to their job.
57
Bats sleep 18-20 hours per day.
5
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
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