True: Your body loses about 40,000 tiny pieces of skin an hour, Your brain sends billions of signals every minute, 140 million cells in your eyes help to tell you what you can see, Women's hearts beat faster then men's heart, Your brain makes electricity, Your natural smell changes as you get older, Some bacteria in your body help you to survive, False: The human heart beats about 200 times a minute, Your brain stops working when you sleep, Brain cells do not live in the stomach,

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