Human teeth are almost as hard as rocks. You blink about 84 million times in a year. Sex burns 360 calories per hour. An average man spends 3,350 hours shaving in his lifetime. The average person laughs 15 times a day.
Children grow faster in the spring.
Women blink nearly twice as much as men. During a kiss as many as 278 bacteria colonies are exchanged. A passionate kiss uses up 6.4 calories per minute. The only one of the more than 200 bones in our body that is unemployed, the coccyx is found at the base of the spine. Some scientists have theorized that it's all that's left of the tail we once had.