When I was younger, I would only take non-prescription pain killers (Aspirin, Tylenol, Advil, and the like) when I actually had a headache or muscle pain. Now, at 69, after a "long" day (say, 10 or 12 miles) of hiking, I find that I'll take a dose as a preventive, rather than palliative, measure. (I nearly said "prophylactic rather than palliative, but I've seen how my fellow elders' minds work. smile )

What do you all do (besides the obvious: "Don't try to walk that far in a day!")