I would love to know and have not been able to figure this out when I am trying to lift extremely heavy objects. I always end up hurting my back or shoulders because I don’t know how you force the legs to lift things while you are standing on them in one spot or moving. Are you also supposed to be lifting with your legs while you’re walking the heavy object to its destination?
In: Physics
Essentially, the only muscles engaging along your arms should be your hand muscles to actually grip the object.
Otherwise yes, you should be squatting rather than bending your back, and your legs should be the muscles engaging to bring the object off the ground as you come to a standing motion. You can use your arms a little bit if you need to readjust, but they shouldn’t be doing the actual lifting.
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