I saw an episode of 600lb Life where they said they couldn't really hold up their arms to wash their hair because it was tiring. Imagine being so fat that the thing done to clean your body is such a workout, you end up sweating and getting stinky in the shower. And that's not even taking getting out and drying yourself into consideration... Post Shower Stink is a real thing, and when I was a kid I smelled it :x