The average sperm cell swims at 8 inches per hour.
4
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
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
A study in the UK states that men need at least two "guys nights out" each week to stay healthy.
5
The lense of the eye continues to grow throughout a person's life.
34
Most dreams last only 5 to 20 minutes.
79
There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
62
