If you're fat and poor, you can just go with Calories In, Calories Out- eat less, move more- and very safely lose one pound a week while also saving money because (hopefully) you aren't eating all that junk non-food that allowed you to pile on the pounds in the first place. And for those of you who want to argue "fast food is cheaper" and "fresh fruits and veggies are expensive" I will just point out that fast food is actually VERY EXPENSIVE when you sit down (which you are probably prone to do anyway) and calculate what you are getting for your dollar at McDonald's, Burger King, Taco Bell, KFC etc.) and that canned fruit and frozen veggies are just as nutritious as fresh and much, much cheaper than fresh. Also, you don't need a fancy exercise machine or a gym membership or Jazzercise or Spin classes. You just need to be willing to walk an hour a day. And if you try to tell me that you don't have an hour a day, you get to hear me ask how much time you spend every day on your phone or Netflix.
But if you're fat and rich, you can just get a subscription to Nutrisystem and have all your meals delivered to your door like you're helpless royalty incapable of actually taking charge of your life and your health but perfectly willing to burn that money you've got plenty of if it means you don't have to make any other decisions. I mean, we're talking $495 per month with automatic refills. I don't know about you, but that's at least three times my monthly food budget, and I eat pretty healthily. However, it IS quite a bit less than you'll be spending per month on a diet of "cheap" junk food. So I guess the next step is up to you.