Enamel is hardest substance in the human body.
61
The average person's skin weighs twice as much as their brain.
131
When you take a step, you are using up to 200 muscles.
886
Your thumb is about the same size as your nose.
124
Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
18
Chewing gum boosts your brain power.
285
If your DNA was stretched out it would reach to the moon 6,000 times.
256