When you get goosebumps and your hair stands, the hair helps to trap air, making you feel warmer by keeping in your body heat.
46
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
A human being loses an average of 40 to 100 strands of hair a day.
133
In 1996, research found that having excessive body hair is linked to higher intelligence.
23
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
32
Your thumb is about the same size as your nose.
124
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
199