Fingernails grow nearly 4 times faster than toenails.
31
A toothbrush within 6 feet of a toilet can get airborne bacteria from flushing.
15
A woman's sense of smell is most sensitive during ovulation.
34
There are more bacteria in your mouth than there are people in the world.
60
Sex burns about 360 calories per hour.
860
About 400 different kinds of microbes live on and in the human body.
-3
Holding hands with someone you love can alleviate physical pain as well as stress and fear.
26
After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
55