A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12
You burn more calories sleeping than you do watching television.
348
The higher someone’s I.Q. the more likely they are to be sleep deprived.
29
The strangers in your dreams are actually people that you've seen in real life.
50
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
47% of people have a nightmare at least once a month.
186