Earlier quoted context omitted.
As with many things, it's easier to stay healthy if you are wealthy. You can buy personal training services, workout gear, a home in traffic-calmed neighborhoods where you aren't jogging or cycling along rural highways, a pool, etc. You can buy fresh fruit and vegetables instead of highly-processed food. If you're American you can buy imported or certified organic meat instead of the hormone-filled shit on the shelve…
Personal training services? Workout gear? Not sure you should have lead with that, these are expensive things with minimal impact.
If you're not wealthy you can do them, but you have to sacrifice other things, and some of those you wont be able to afford.