Everything we humans do are performed by the use of muscles. Even blinking or breathing uses muscles. You see, unlike blinking, which only takes 3 muscles, taking one single step uses 200 voluntary muscles! 
   Now to fully comprehend this, you might want to know how many muscles there are in a human body. Now, there is no exact number, but the estimated amount is 640. So you surely do use a lot of your total muscles in your body!

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