Your body is creating and killing 15 million red blood cells per second.
50
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
When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
44
Pain occurs when sounds are above 130 db.
124
More people have a phobia of frogs than rats.
41
Enamel is hardest substance in the human body.
61
Men have larger hearts; women's hearts beat faster.
77