I've never been one for going to a gym (although with life getting busier and busier it's probably about time that it's worth looking at). However I routinely

I've never been one for going to a gym (although with life getting busier and busier it's probably about time that it's worth looking at). However I routinely move gearboxes and engine blocks around my home workshop, lift the car and turn spanners underneath it (trying to crack exhaust manifold studs while laying on your back and only having half a foot's worth of arm room can be an awesome workout on your arms, haha!), take the chainsaw out into the bush and lop up firewood, etc etc, as well as a morning routine of stretches. I try to keep quite active outside of office hours and do tasks which simulate the kinds of workouts people regularly do in gyms to make up for the tremendous amount of sitting I do 9-5. Obviously I'm not setting targets and able to quantify my fitness from the things I do, however I've successfully staved off the 'programmers belly" for the better part of a decade and a half so far.