30 Things You Didn’t Know About The Human Body

1. Your body has enough iron in it to make a metal nail 3 inches long.

2. Have you ever felt calm while listening to a slow song? That's because our heartbeats mimic the music we listen to.

3. Each heart has its own electrical system, which means that as long as it receives oxygen, it'll continue to beat even if it's removed from the body.

4. On a daily basis, our hearts produce enough energy to drive a truck for 20 miles.

5. Sweat is odorless, and body odor actually comes from it mixing with bacteria on the skin.

6. If our eyes were digital cameras, they'd measure at 576 megapixels.

7. Your feet contain 1/4 of all the bones in your body. This means that the alignment of these bones affect the rest of the body.

8. Although smaller in size, a woman's heart beats faster than that of a man's, even while asleep.

9. The average person produces enough saliva to fill two swimming pools in their lifetime.

10. Humans shed nearly 600,000 particles of skin every hour, which adds up to 1.5 pounds annually.

11. Enough electricity is produced by the human brain when awake to power a small light bulb.

12. Our noses can remember about 50,000 different scents.

13. Adults excrete a daily average of 1.42 liters of urine.

14. Every single one of us have tiny mites called demodex living in our eyelashes.

15. The masseter, or jaw muscle, is the strongest muscle in the human body based on its weight.

16. There is no scientific evidence supporting the "fact" that shaving leads to hair growing back thicker.

17. Sleep is important. Getting less than 7 hours of sleep each night can reduce your life expectancy.

18. Our ears and noses never stop growing.

19. In your lifetime, your heart will pump enough blood to fill 200 train tank cars.

20. Babies have about 60 more bones than adults. As we grow, some of our bones fuse together to form one.

21. Wondering where all that dust comes from? About 75-90% of the dust in your home is your own dead skin cells.

22. Women with larger bottoms are more resistant to chronic illnesses. This fact, however, isn't meant to be compared with those women who are at a healthy thin weight ( they're just as healthy).

23. According to new research, our brains continue to develop well into our 40s.

24. Each of us have unique tongue prints, just as we do fingerprints.

25. An adult human body contains about 100,000 miles of blood vessels.

26. Our eyes can detect about 10 million different colors.

27. Our brains use 20% of all the oxygen and blood in our bodies.

28. The human body is made up of 7 octillion atoms, which is a 7 followed by 27 zeros.

29. Some people manage to hold their breath for five minutes, which is made possible when we fool the diaphragm.

30. With each step we take, we use up to 200 muscles, so don't think walking doesn't count as exercise.