Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
22
If you were to roll a lung from a human body and out flat it would be the size of a tennis court.
36
A human being loses an average of 40 to 100 strands of hair a day.
133
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
Your hair grows faster in the morning than at any other time of day.
91
Those who get out of bed by 7am are more likely to be thinner and happier.
20
During menstruation, the sensitivity of a woman's middle finger is reduced.
47