It is almost impossible to sneeze with your eyes open. It is a defense mechanism that has evolved to protect our eyes from bacteria and debris.
164
Human thigh bones are stronger than concrete!
63
The average sperm cell swims at 8 inches per hour.
76
Nearly 80 percent of all sudden cardiac arrests happen at home.
7
According to a 1950s survey, 75% of men ejaculate within two minutes of penetration.
109
You're born with 300 bones, but when you get to be an adult, you only have 206!
17