A man's beard grows fastest when he anticipates sex.
239
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
The human sigh acts as a physiological reset button.
23
Every human spent about half an hour as a single cell.
144
Enamel is hardest substance in the human body.
61
Our brains have a negativity bias and will remember bad memories more than good ones.
15
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
198
It takes about 20 seconds for a red blood cell to circle the whole body.
102