There are about 1,400 different species of bacteria in your belly button.
10
Every year your body replaces 98% of your atoms.
119
People who sleep late have more mental stamina and can outperform early risers.
33
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
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
Music has the ability to repair brain damage and return lost memories.
62


