I don't exercise much. I'm naturally thin, so the only reason I'd do it would be to increase my strength. I have too little fat as it is and as for bulking up, that just doesn't happen with me - I'd have to go on a protein diet or something similar. Normally it's just my strength that increases, nothing visual, when I 'work out' regularly. I say 'work out', but usually it's more 'work' that just happens to involve a lot of manual labour. I mean, if you want to burn fat or build up muscle, why not just look for a little contracting in the manual labour industry? Get paid instead of paying.