Now you Know
18. Fact
Fingernails grow nearly 4 times faster than toenails.
19. Fact
The lifespan of a human hair is 3 to 7 years on average.
20. Fact
You must lose over 50% of your scalp hairs before it is apparent to anyone.
21. Fact
Human hair is virtually indestructible.
22. Fact
The largest internal organ is the small intestine.
23. Fact
The human heart creates enough pressure to squirt blood 30 feet.
24. Fact
The acid in your stomach is strong enough to dissolve razorblades.
25. Fact
The human body is estimated to have 60,000 miles of blood vessels.
26. Fact
You get a new stomach lining every three to four days.
27. Fact
The surface area of a human lung is equal to a tennis court.
28. Fact
Women's hearts beat faster than men's.
29. Fact
Scientists have counted over 500 different liver functions.
30. Fact
The aorta is nearly the diameter of a garden hose.
31. Fact
Your left lung is smaller than your right lung to make room for your heart.
32. Fact
You could remove a large part of your internal organs and survive.
33. Fact
The adrenal glands change size throughout life.
34. Fact
Sneezes regularly exceed 100 mph.
35. Fact
Coughs clock in at about 60 mph.
36. Fact
Women blink twice as many times as men do.
37. Fact
A full bladder is roughly the size of a soft ball.
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Fact
A real estate agent’s rule of thumb: To estimate what a house will sell for, ask the owner what its worth and subtract 10%.
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