While going to my physical therapist for my total knee replacement rehab, I asked her how to tell if I was overworking my muscles. “How do I know when too much is too much?” is what I asked her. She told me very matter of factly….”You can tell you’ve done too much when you hurt for two hours after your exercise is done.”
I’ve been using that as my benchmark ever since. It may work for other total knee replacement patients, also.
BTW…..I totally trusted my physical therapist. She was the only one who truly knew what I was going through. If you go to a physical therapist, you need to trust the person. You are in their hands, literally and figuratively.