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
A new baby usually deprives each of it's parents around 350-400 hours of sleep in the first year. That is one entire nights sleep per week, per parent.
194
The harder you concentrate on falling asleep, the less likely you are to fall asleep.
34
A new parent will lose about 1055.6 hours of sleep in the first year of their child's life - almost 44 days!
6
Dieters who sleep more take off more fat that those who sleep less.
159
"Dysania" is the state of finding it hard getting up out of bed in the morning.
33
Cows can sleep standing up, but they can only dream lying down.
745