Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
18
When you fall in love, that 'high' feeling is caused by a flood of dopamine that is similar to that of cocaine.
44
Deep Breathing gives you health benefits similar to aerobics.
39
The average sperm cell swims at 8 inches per hour.
4
The average sperm cell swims at 8 inches per hour.
76
Fingernails grow nearly 4 times faster than toenails!
30
Drinking banana milkshake is a perfect cure for hangover.
21

