Kissing an infection-free partner is good for your teeth!
141
Your tongue is the only muscle in your body that is attached at only one end.
173
The average person's skin weighs twice as much as their brain.
131
You have no sense of smell when you're sleeping!
72
The human sigh acts as a physiological reset button.
23
Redheads require up to 20% more anesthesia to be knocked out.
112
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
"Fish odor syndrome" is a rare genetic disorder that causes people to smell like rotten fish.
5