Learn1 of 3
Your Heart Never Stops
Your heart is a muscle about the size of your fist. It beats about 100,000 times every day — even while you sleep! Each beat pushes blood through tubes called blood vessels to every part of your body.
Loading...
Health — Heart and Lungs
Your heart is a muscle about the size of your fist. It beats about 100,000 times every day — even while you sleep! Each beat pushes blood through tubes called blood vessels to every part of your body.