There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
62
Enamel is hardest substance in the human body.
61
Smokers get ten times more wrinkles than non-smokers.
171
20 minutes after smoking a cigarette, blood pressure drops to normal.
37
If your stomach didn't produce a new layer of mucous every two weeks, it would digest itself.
33
You mostly breathe from only one nostril at a time!
75
By putting a frog in a bucket of milk, scientists following up on an ancient Russian way of keeping milk from going sour have identified a wealth of new antibiotic substances.
9
