There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12
Honeybees never sleep.
276
Lack of water is the #1 trigger of daytime fatigue.
148
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
The higher someone’s I.Q. the more likely they are to be sleep deprived.
29
Bats sleep 18-20 hours per day.
5