Every fat ass who is in one should be walking, and the only reason they don't is because everyone around them is too god damn soft. Doctors can't even say "hey you're fat medically and need to stop eating so much" without them trying to fucking sue.  The only solution is for them to be treated like the shit they are, no carts, no doctors, nothing but vegetables and lean meat for a year in confinement, and even that's too kind/generous for most of them. Most people don't get fat for any reason other than greed.