Muscle: Flex Your Mouse - a podcast by Colleen Patrick-Goudreau, Author

from 2017-01-22T17:07:28

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Roll up your sleeve past your bicep, flex your arm at the elbow, and squeeze — or contract — your bicep muscle. Take a look at it. Now, relax it -- keep looking at it, and contract again. Squeeze. And relax. What do you see? Movement, right? Do you see an animal? Well, some anatomist did when the word muscle was coined.