a lot depends on what you have been through. Athletic injuries early in life seldom improve and often get worse with wear and tear. I know caring for elderly parents in my own home, and the dynamics that can create, caused mental stress and blood pressure problems. Our life expectancy sometime exceeds our body parts. Knees, hips and other joints just don' work as well. The large muscles of the body just don't maintain, possibly due to testosterone drop. And adding test can create it's own problems. Unfortunately we are not going to get out of here alive.