It takes 7 seconds for food to pass from mouth to stomach. A human hair can hold 3 kg.
The length of a penis is 3x the length of the thumb.
The femur is as hard as concrete.
A woman's heart beats faster than a man's.
Women blink 2x as much as men.
We use 300 muscles just to keep our balance when we stand.
A woman has just read this entire post.
The man is still looking at his thumb.