1. After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.

2. 10 seconds is the amount of time until unconsciousness after the loss of blood supply to the brain.

3. The brain can stay alive for 4 to 6 minutes without oxygen. After that cells begin die.

4. A man's beard grows fastest when he anticipates sex.

5. Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.

6. You heart will pump about 400 liters or about 800 quarts in its lifetime.

7. The human brain uses approximately as much energy as a 10 watt light bulb.

8. Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!

9. The human body contains over a billion miles of DNA.

10. Sex burns about 360 calories per hour.

11. The skin on your lips is 200 times more sensitive than your fingertips.

12. Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.

13. Pain occurs when sounds are above 130 db.

14. The adult human brain weighs about 3 pounds (1,300-1,400 g).

15. Lack of water is the #1 trigger of daytime fatigue.

16. Our Right Lungs takes more air than our left lung.

17. Although African-Americans make up only 13% of the U.S. population, they accounted for one half of the estimated new HIV/AIDS diagnoses in 2004.

18. Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.

19. Due to the angle at which the optic nerve enters the brain, staring at a blue surface during sex greatly increases the intensity of orgasms.

20. After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.