What muscles do push-ups work? And how many to do per day.

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100 Push-Ups a Day for 30 Days: What Happens to Your Body?

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I Took Push-Up Breaks At Work Every Day For A Month, And Here's What Happened

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What Muscle Does a Pushup Work?

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Benefits of Push-Ups How to Do a Proper Push-Up, push up

What muscles do push-ups work? And how many to do per day., push up