Cows can sleep standing up, but they can only dream lying down.
745
Honeybees never sleep.
276
Bats sleep 18-20 hours per day.
5
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
You forget 90% of your dreams.
256
The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
15