It takes about 20 seconds for a red blood cell to circle the whole body.
102
There's 100 trillion good bacteria living in your body.
17
20 minutes after smoking a cigarette, blood pressure drops to normal.
37
Children are more allergic to cockroaches than they are to cats!
46
One out of 20 people have an extra rib.
66
2 out of 3 adults in the United States have hemorrhoids.
7
If your stomach didn't produce a new layer of mucous every two weeks, it would digest itself.
33
Your skin is actually an organ.
88