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 adult human brain weighs about 3 pounds (1,300-1,400 g).
99
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31
The human sigh acts as a physiological reset button.
23
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
If you hold farts in during the day, they'll just come out when you sleep.
16
Fingers prune underwater not because of them absorbing the water or washing away the oil, but because of an evolutionary trait caused by the brain to enhance the grip of your fingers underwater.
24
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127