Since I've become poorer than my efforts should have allowed, I have to watch the food bill very closely. I've noted that when I get exercise, I'm hungrier, and after extensive physical labor, even more hungry. I remember reading about people in the so-called great depression that supposedly conserved their energy by lying in bed and not moving much. Anyway, I'm finding that before I undertake any kind of activity, I'm having to reprogram my mind to ask if I can afford to purchase more food. I haven't been successful with this reprogramming, yet.
Perhaps one way to encourage more exercise is to ensure that healthy food is inexpensive. Here in the U.S., food prices have been increasing quite a lot in the last several years, with many recent predictions that such an energy source will continue to increase in cost. Buying food for your body is much like filling the car with gas.
Can we afford to drive that far, that frequently? The answer may be, "No, we cannot."