During a typical human life span, the human heart will beat approximately 2.5 billion times.
21
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
It is possible to go blind from smoking too heavily.
50
Surgeons who listen to music during operations perform better than those who don't .
87
Sleeping on your stomach can induce weirder, scarier, and sexier dreams.
22
People that suffer from gum disease are twice as likely to have a stroke or heart attack.
22
There are about 1,400 different species of bacteria in your belly button.
10
Wearing headphones for an hour increases the bacteria in your ear 700 times.
233