This was asked to Bill Ward / Black Sabbath, during an interview:
AAJ: What kinds of things do you do to practice and to stay in shape as a drummer?
BW: To stay in shape, I walk. Right now we haven't been doing that many gigs. We've had a couple of problems on Ozzfest this year and hopefully now we're back in the groove and we're going to be able to rock out with the songs, with the shows. But usually, playing a tour as long as we've been on tour—we've been on tour now for a little while—that normally keeps my weight down just playing, regular playing. These days I don't eat, like, anything that I want. I can't eat anything that I want anymore. I have to eat things that are good for me (laughs), which has taken a lot of getting used to. And that, again, by changing those things another release of anger comes, because at first, whenever you can't have something, with me at least, I'm always angry about, like, how come I can't still have large pizzas and all this kind of stuff. Well, the bottom line is you can't have large pizzas because you're going to die if you don't change. So, I try to keep myself very fit. When I am at home I do a lot of walking, every other day, 10 mile walks, eight mile walks, and I walk in the sand five miles to keep my back legs nice and strong.
As a drummer I don't need to have a lot of muscle, but I do need to have stamina. So, to maintain stamina, that's why I do the five mile walks in the sand. They build up back muscles, they're good. Drummers need strong lower backs, as far as I'm concerned. We're sitting on drum stools all the time, you know. I do some very light weights just to keep my shoulders intact. Over the years, mate, there's been so much wear and tear on my body now that my shoulders have gone. I have had one operation on my left shoulder because it was so torn up. It's just gone from playing. You know, it's ripped to pieces. I think most of my fingers are broken except for a couple. With that comes arthritis. It's just the wear and tear of playing over the years. There are all kinds of things that I do though. I can't say enough about massage. I'm talking about sports massage, or Chinese massage, or Japanese massage, where I can keep myself supple and try to keep relaxed. Meditation is a good tool; relaxation is a good tool, learning to relax. All these things are essential.
I hope it helps...