I seem to be the exception here. I've been training since 1977 or so, but I can only say that I have trained daily for about the past 16 years along with weight training.
I don't have any joint, bone or muscle trouble/pains besides the normal muscle soreness associated with hard physical training. But, I do practice a system of martials arts that was designed to avoid those problems by using natural body motions in training. This simply means to use proper biomechanics of the human body. So, maybe this is the difference in my case.
R. McLain
Patience, give it a few years, it will happen.