Each person has about 4 pounds of bacteria living inside of his/her body.
Fingernails grow 4 times faster than toenails.
Deep breathing gives you similar benefits as aerobics.
Smokers are four times more likely to complain about a feeling tired in the morning than non-smokers, and are 70% more likely to have hearing problems.
A human record of staying awake is 11 days.
Babies are born without kneecaps. They develop at around 2-6 year of age.
Your kitchen sink is dirtier than your bathtub.
Four out of five doctors don’t get enough exercise.