Plank is when an exercise in which a prone person balances on the toes and forearms while holding the rest of the body up and off the ground
Do two to three sets of these moves two days a week: push-ups (work up to 25) to build chest, shoulder and triceps strength; plank (support your body on your forearms and toes for up to 60 seconds) to build ab and back strength … check the videos below to learn how to plank......
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