Crushed cockroaches can be applied to a stinging wound to help relieve the pain.
31
It takes 17 muscles to smile, 43 to frown.
65
If you were to roll a lung from a human body and out flat it would be the size of a tennis court.
36
Your stomach produces a new layer of mucus every two weeks so that it doesn't digest itself.
160
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
The average sperm cell swims at 8 inches per hour.
76
Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
149
The lense of the eye continues to grow throughout a person's life.
34