I have cartalige damage in one knee (not due to strenuous exercise). I as originally advised to do low impact exercises that mobilised my knee for reps/time, e.

I have cartalige damage in one knee (not due to strenuous exercise). I as originally advised to do low impact exercises that mobilised my knee for reps/time, e.g. cycling, swiming, rowing. This was OK, but lifting was what really helped with the problem. Over the years, improving my lifting has helped with my posture, hip flexor problems etc.