50 Wacky Things Humans Do describes 50 weird, wild, and unbelievable things the human body is able to do. Science has never been so much fun! Did you know that when you sneeze it rockets out at over one-hundred miles per hour ? How about that the average person sheds about five hundred million skin cells every day? What about the fact that most of the cells in your body are not even human ?! 50 Wacky Things Humans Do gives you the dirt on 50 unbelievably weird things about the human body that seem too crazy to be true, but are! Whether amazing , silly , or just plain gross , these peculiar and fascinating things about the human body will surprise and delight fun-fact lovers of all ages. 50 Wacky Things Humans Do  is just one book in Walter Foster Jr.'s Wacky Series. Be sure to also check out  50 Wacky Things Animals Do ,  Wacky Inventions Throughout History , and  50 Wacky Things Pet Do .