Perhaps they could start by shedding some of their excess weight.
You have to get up out of a chair and MOVE around (sweep, clean windows, shovel snow, rake leaves, etc.) to do THAT!
I need some help with that sort of thing and you’d think I asked for blood when I ask a neighborhood kid to come over and do some actual WORK, for pay.
They look at me like I’m speaking another language... ‘work’ What is that?