I was with you until the last sentence. I'd use it the other way: Have my body exercise while my mind goes on less painful pursuits. It's all wishful thinking

I was with you until the last sentence. I'd use it the other way: Have my body exercise while my mind goes on less painful pursuits. It's all wishful thinking though. There are serious disadvantages to putting hardware in bodies. Upgrading or fixing broken implants would require surgery, which is risky and expensive.