Did you ever think your body is like a rain forest or a coral reef?
Well, for countless microscopic critters, you are a walking, breathing ecosystem. These organisms need each other, and they need you too. In fact, you are their environment!
So many bacteria live on your body that they outnumber human cells by at least a hundred to one. They add up to about 10 percent of your body weight. Washing removes many of them. But they reproduce very quickly, doubling as fast as every 20 minutes. The bacteria population on your body can restore itself within hours.
