I smoked, drank alot and took drugs in my teens and early 20's and at a point I felt so horrible (mentally and physically) that I had to try something.
I quit all the bad stuff, got back into the gym, dropped carbs until I lost about 10kg (I wasn't too overweight but I looked like death) and now I am normal weight and looking better. I feel a bit fragile still though, I can't make myself lift really heavy weights because I sense that I'm doing more harm than good. Same with running, my joints don't like it and I always felt like I had a weak heart.
So moderation suits me.
I think if you put in a few hours of drumming each day, you're doing something fairly active.