A guilty conscience has been known to weaken a person s immune system

The tooth is the only part of the human body that can t repair itself

Xenotransplantation is the transplanting of animal organs into humans

The blood volume in a healthy adult amounts to 8% of total body weight

Defecation syncope is a disease that causes you to faint when you poop

Smiling releases endorphins in the body which makes people feel bette

Teeth are the only parts of the human body that can`t repair themselves

It takes about 20 seconds for a red blood cell to circle the whole body

Within a tiny droplet of blood there are some 5 million red blood cells

It takes about 20 seconds for a red blood cell to circle the whole body

The Chinese in olden days used marijuana only as a remedy for dysentery

It takes about 20 seconds for a red blood cell to circle the whole body

The Chinese in olden days used marijuana only as a remedy for dysentery

It takes about 20 seconds for a red blood cell to circle the whole body

The Chinese in olden days used marijuana only as a remedy for dysentery