Cows can sleep standing up, but they can only dream lying down.
745
Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240
The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
15
Dieters who sleep more take off more fat that those who sleep less.
159
Termites work 24 hours per day and they do not sleep.
57
A new parent will lose about 1055.6 hours of sleep in the first year of their child's life - almost 44 days!
6