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
Crouching and holding your back straight means that when you stand up, you’re “pushing off” with your legs, and they take most of the force.
Standing and leaning over means that when you stand up, you’re pulling upwards with your back, so it takes most of the force.
Lifting “with your legs” is therefore much less punishing on your back.
For me the best way to lift with my legs is to squat to pick it up rather than bend. For carrying it, you engage your core while walking. Then squat to put it down.
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