Good for what ails you

Exercise, that is. Especially walking. No matter what I think isn't quite right, walking doesn't hurt and usually helps. And, whenever possible, I also try to maintain the more intense parts (elliptical, treadmill, light weights) of my routine. This adds up to a chunk out of the day, you say. True. But if I'm more efficient during those remaining hours, I consider it worth it. What's your healthy cure-all for the ailing moments?