The human heart creates enough pressure to squirt blood 30 feet. The average life of a tastebud is 10 days. The average person falls asleep in seven minutes. Your stomach produces a new layer of mucous every two weeks so that it doesn't digest itself. It only take 7 pounds of pressure to rip your ear.
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.