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.
21
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
The human brain uses approximately as much energy as a 10 watt light bulb.
120
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31
You can hear the blood flowing through your ears if you find a quiet place and cover them tightly.
17
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
In 1996, research found that having excessive body hair is linked to higher intelligence.
23