Your heart rate can rise as much as 30% during a yawn.
69
It takes about 20 seconds for a red blood cell to circle the whole body.
102
Human hair and fingernails continue to grow after death.
7
In the average lifetime a person will breath in about 44 pounds of dust.
21
Every time you sneeze some of your brain cells die.
113
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
Midgets and dwarfs almost always have normal sized children.
54