A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Lack of water is the #1 trigger of daytime fatigue.
148
The higher someone’s I.Q. the more likely they are to be sleep deprived.
29
The average person falls asleep in seven minutes.
115
People who sleep late have more mental stamina and can outperform early risers.
33
Those who get out of bed by 7am are more likely to be thinner and happier.
20
You forget 90% of your dreams.
256