Honeybees never sleep.
276
The human brain is more active during sleep than during the day.
28
Bats sleep 18-20 hours per day.
5
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
Studies show that the colder the room you sleep in, the more likely you are to have a bad dream.
28
A new parent will lose about 1055.6 hours of sleep in the first year of their child's life - almost 44 days!
6
Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
149