The muscles worked by push-ups include the chest, shoulders, back, core, and arm muscles. This exercise is a great addition to any workout. There are several ways to modify or amplify your push-ups.
Dr. Sharon Gam on MSN

How to get better at push ups

Get your first full push up from the floor!
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Spc. Coca Temoananui, an intelligence analyst from Honolulu, assigned to the 311th Signal Command, strains for an extra push-up in the 2012 U.S. Army Reserve Best Warrior Competition at Fort McCoy, ...
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