You're born with 300 bones, but when you get to be an adult, you only have 206!
17
If you unfolded your brain, it would cover an ironing board.
42
Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
103
Within three days of death, the enzymes that once digested your food begin to eat you.
22
Your heart will pump about 212 million liters in its lifetime.
26
Your spit has a painkiller 6 times stronger than morphine. It contains a substance called opiorphin that is stronger than morphine.
39
Redheads require more anesthesia to 'go under' than other hair colors do.
50
Smoking while pregnant increases the chances of spontaneous abortions (miscarriages) stillbirths and premature labor.
77