There are about 1,400 different species of bacteria in your belly button.
10
If your DNA was stretched out it would reach to the moon 6,000 times.
256
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
The levels of two stress hormones, cortisol and epinephrine which suppress the body's immune system, will actually drop after a dose of laughter.
112
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
The human sigh acts as a physiological reset button.
23
Within three days of death, the enzymes that once digested your food begin to eat you.
22