Bearing a male child can alter a woman's brain by leaving male DNA that can persist for the rest of her life, making her less likely to suffer from Alzheimer's disease, promote tissue repair, and improve her immune system.
16
If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
12
Your ears secrete more earwax when you are afraid than when you aren't.
235
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.
70
Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
103
Your ribs move about 5 million times a year, every time you breathe!
60
The right lung takes in more air than the left.
30