There is plenty of work to do in the world, and working out at a gym seems to me a silly or at best a selfish act, because no good work is getting accomplished by the shifting of dead weights or the turning of a treadmill. I have always preferred doing something physical that either serves a purpose or else makes money. Working out at a gym, or going for a walk with no other purpose in mind than walking, always struck me as a slightly foolish waste of time and energy. That said, I've spent plenty of time going for pointless walks and runs and lurking in gyms. But no more. I think it is better to find personal projects around the house, yard or community to work on and complete rather than buying a gym membership. In that manner, the imagination and the soul (and possibly the bank account) are exercised and enriched in addition to the body.
Rather than lift weights at a gym, a prospective bodybuilder would be well-advised to sell his services as a mover and be paid to lift, rather than paying for the privilege of lifting. Rather than walk in a park for no other reason than exercise, a man would be better off working a job that requires him to spend some time on his feet, thereby getting paid, in effect, to walk and move around.