Fingernails grow nearly 4 times faster than toenails.
31
Enamel is hardest substance in the human body.
61
We are born with 350 bones, and die with 206.
135
When you get goosebumps and your hair stands, the hair helps to trap air, making you feel warmer by keeping in your body heat.
46
Your body is creating and killing 15 million red blood cells per second.
50
Deep Breathing gives you health benefits similar to aerobics.
39
A person can live without food for about a month, but only about a week without water.
156