The harder you concentrate on falling asleep, the less likely you are to fall asleep.
34
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
Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
22
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Sea otters hold hands while sleeping so they don’t drift away from each other.
104
The strangers in your dreams are actually people that you've seen in real life.
50