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Muscles are the "engine" that your body uses to propel itself. They are responsible for your body's every move. Within the human body there are more than 600 individual muscles. Without them you could not walk, talk, smile or, more importantly, your heart would not beat and you wouldn't breathe.
This excerpt of Muscular Contractions comes from the All About Muscles program. Purchase your full copy at www.VEA.com.au and subscribe to this channel to easily view more educational videos.