You want an exoskeleton. No need to replace your arm, just wear something that augments it, and the rest of your body.

There are some great ones in sci fi, but google ot and see the ones available in real life

Pretty much what everyone already said The force you want to move affects your whole body, you move objects against the effects of gravity, therefore your whole body needs to be in action. If you lift something over your head you put yourself between the object and the center of gravity, so your whole body needs to withstand the force of both Wich brings us to either an exoskelleton or an replacement, or Augmentation, of almost all your bones and muscles

From the moment I understood the weakness of my flesh, it disgusted me.

Check out Ian Davis’ prosthetic hand.

https://www.youtube.com/watch?v=kixS5Sy0F9s

In at least one of his videos, he demonstrates a ‘lock under load’ feature that enables him to lift fairly heavy objects.

I don’t think you’d get any magic superhuman powers, but it’s pretty badass regardless.

This. This is a stupid question.