contains phenyl ethylamine (PEA), a natural
substance that is reputed to stimulate the same
reaction in the body as falling in love.
cough releases an explosive charge of air that
moves at speeds up to 60 mph. A sneeze can exceed
the speed of 100 mph.
average human drinks about 16, 000 gallons of
water in a lifetime.
largest human organ is the skin, with a surface
area of about 25 square feet.
takes 17 muscles to smile - 43 to frown.