A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
47% of people have a nightmare at least once a month.
186
The higher someone’s I.Q. the more likely they are to be sleep deprived.
29
Honeybees never sleep.
276
Those who get out of bed by 7am are more likely to be thinner and happier.
20
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
There's a love mattress that is specifically designed for couples who sleep on each other's arms.
12