Shit I feel good!
At 54, all I need to keep alive is a new pacemaker, and a new heart valve.
It is surprising reading this thread how many young people have joint problems. Not good.
I believe you have to live your life to the fullest. You never know when you will be struck down with some problem that may change your whole life.
I have a family history of heart, and joint (body parts, not the smoking variety) problems.
So far, plenty of lower back problems from too much heavy lifting when young, and arthritis is knocking on the door as well.