I work in metal fabrication and my I'm lithe.

I don't have any trouble at all keeping my weight under control, but in order to stay strong and flexible I still need to work at it constantly.

To that end, I have a weight bench, barbell and dumbbells in my lounge room, and a pull up bar hung between two door ways in the hall.

I find 'working out' tedious, incredibly boring. But I'll walk by the pull up bar and do 10 pull ups multiple times a day, or grab a couple dumbbells and do a few sets here and there.