Well, fortunately I've managed to avoid those. My sister tried to get me into those "workout videos" like P90X, and I just couldn't get into it. I enjoy lifting weights, and I enjoy walking, hiking, and even the occasional run. But I can't think of anything that makes exercise less fun than standing in front of a TV watching someone bounce around and trying to follow what they're doing. I'd rather have involuntary dental surgery.
If I'm going to expend energy, I'd just as soon accomplish something, too.
I never could get into 'working out'.
I tried it once in college when a couple of guys in our suite asked me if I wanted to join them and I went down to the gym. They were stunned to find out I really had no idea how to work a nautilus machine or any of that stuff. When they showed me, and asked me later what I thought, I said it was okay, but boring...
The muscles I had came from working on my grandfather's tobacco farm, rowing a skiff, tonging oysters, throwing hay bales, and work on a marine contractor's seawall and pier crew.
I had never 'worked out'.
But I do enjoy the satisfaction of getting things done,
As for hiking and even light climbing, whenever I'm around rocks, game on.
Geology is not just my profession, but a passion, and I love finding fossils or nice mineral/rock specimens.
(My wife has even made me decide which will be 'inside rocks' and which are 'outside rocks'), and I'm re-doing the rock garden if I get time this year.
It's a little tougher as I have grown older, but I find ways to get exercise in.