[rory]

> You can work on your physical health, but as with many low income people you may have to work hard for money and have no physical energy left over for such feats

If you are physically exhausted from your work, you almost certainly exercised enough during that work to be in good physical health. The health problems of low income people are almost always caused primarily by nutritional issues (too much food, too little, or not the right variety, depending on the context).