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A comment on Too much sitting, too little exercise may accelerate biological aging. Parent comment

Re:Too much sitting, too little exercise may accelerate biol... by sn9 on Thursday January 19, 2017 @12:57AM (#13433421)
Pushups are basically planks where you vary the intensity (with the angle of your body to the ground).

Planks build core strength and the lower back is part of your core.

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