13 Facts You May Not Know About Your Own Body!

1. Nerve impulses in the brain travel as fast as 170 miles per hour (105.6 km/hr).
2. The brain operates on the same amount of power as a 10-watt light bulb.
3. Your brain uses 20% of the oxygen that enters your blood stream.
4. The brain is more active at night than during the day.
5. Eighty percent of the brain is water.
6. The largest internal organ is the small intestine.
7. The heart creates enough pressure to squirt blood 30 feet (~9 meters).
8. The acid in your stomach is strong enough to dissolve razorblades.
9. The surface area of a human lung is equal to a tennis court.
10. The hardest bone in the body is the jawbone.
11. The feet account for one quarter of all the human body’s bones.
12. The tooth is the only part of the body that can’t repair itself.
13. Facial hair grows faster than any other hair on the body.