Same here, lost a lot of muscle mass, and replaced with fat. Other than work, wasn't very active physically, but tomorrow I am signing up at a gym. I used to train a couple of days a week a few years ago, and I remember how I felt much better, more energy, didn't struggle as much as now when removing panels from cars and such, and no lower back pains. I didn't go crazy like a guy that wants to be a bodybuilder, just to stay active and in shape. And after, give up smoking, we have enough crap in a bodyshop to breathe why add more. Have to take care of our bodies just we take care of cars I guess.