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Single-arm exercises
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Tomato05 posted:
To add some variety to my weight training, I am starting to incorporate a few single-arm exercises (chest press, flyes, maybe shoulder press).

Do they really strengthen one's core more so than when doing those exercises with both arms, as the general view is?
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Rich Weil, MEd, CDE responded:
I'm not aware of any research to show that to be true. There could be some research, but I don't recall seeing it. I like 1-arm rows and I know it feels different, and partly that's because there's more torso rotation than 2-arms, and if there's more torso rotation then the abs and back muscles are working differently. It may not work muscles more than 2-arm exercises, but certainly different. Experiment between 1- and 2-arm exercises and listen to your body. You may not be able to tell if they are working more, but you'll know they are working different, and that's a good thing.


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