Every hour one billion cells in the body must be replaced.
17
Your hair grows faster in the morning than at any other time of day.
91
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
If you unfolded your brain, it would cover an ironing board.
42
During menstruation, the sensitivity of a woman's middle finger is reduced.
47
Redheads require more anesthesia to 'go under' than other hair colors do.
50
Your heart rate can rise as much as 30% during a yawn.
69