Steve,
I turned 50 this May and noted I had some problems with joints and pains. I'm working my way back to better health. My new Lab pup is driving me to do more every morning and evening. No more couch potato stuff. I'm 5'10" / 193lbs and loosing it with a target of 175 maybe less. I'm walking/running regularly and feel much better. My doc says I'm good to go on exercise with no heart probs. Chloresterol is inching up just a little and I'm working on that too.