It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
The average sperm cell swims at 8 inches per hour.
76
In ancient Egypt, priests plucked EVERY hair from their bodies, including their eyebrows and eyelashes.
130
If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
12
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515