The human brain is more active during sleep than during the day.
28
47% of people have a nightmare at least once a month.
186
Studies show that the colder the room you sleep in, the more likely you are to have a bad dream.
28
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
Termites work 24 hours per day and they do not sleep.
57
People who sleep late have more mental stamina and can outperform early risers.
33