The human brain is more active during sleep than during the day.
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
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
Bats sleep 18-20 hours per day.
5
47% of people have a nightmare at least once a month.
186
You burn more calories sleeping than you do watching television.
348
The average cat sleeps about 2/3 of the day.
203