Dieters who sleep more take off more fat that those who sleep less.
159
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
The strangers in your dreams are actually people that you've seen in real life.
50
Bats sleep 18-20 hours per day.
5
Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
149
47% of people have a nightmare at least once a month.
186
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