Scientists estimate that laughing 100 times is equivalent to a 10-minute workout on a rowing machine.
202
Redheads require up to 20% more anesthesia to be knocked out.
112
The average sperm cell swims at 8 inches per hour.
76
Kissing an infection-free partner is good for your teeth!
141
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
The average human body contains enough iron to make a small nail.
50
Your tongue is the only muscle in your body that is attached at only one end.
173
Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.
94