A human being loses an average of 40 to 100 strands of hair a day.
133
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
All humans have the ability to see ultraviolet light, but it is passively filtered out by the eye's lens. People who undergo surgery to remove the lens can detect ultraviolet light.
22
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
32
The human brain doesn't stop developing until about 25 years old.
102
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
There's 100 trillion good bacteria living in your body.
17