Those who get out of bed by 7am are more likely to be thinner and happier.
20
Cows can sleep standing up, but they can only dream lying down.
745
The higher someone’s I.Q. the more likely they are to be sleep deprived.
29
You forget 90% of your dreams.
256
Some people have a "natural alarm clock" allowing them to wake up when they want. This is actually caused by a burst of the stress hormone adrenocorticotropin.
15
You burn more calories sleeping than you do watching television.
348
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23