Fingernails grow nearly 4 times faster than toenails!
30
Wearing headphones for an hour increases the bacteria in your ear 700 times.
233
Kissing an infection-free partner is good for your teeth!
141
During a typical human life span, the human heart will beat approximately 2.5 billion times.
21
Nearly 80 percent of all sudden cardiac arrests happen at home.
7
The pupil of the eye expands as much as 45 percent when a person looks at something pleasing.
130
The average sperm cell swims at 8 inches per hour.
4