If you think about like ancient Greek aesthetics, morality and beauty is interlinked. To be beautiful is all to be morally good powerful good
we must toil to be beautiful
so I think this is the difficult thing is that the truth is, you cannot be beautiful without lifting weights, walking around outside, doing physical stuff which requires your physical strength?
like for example consider, can you imagine Hercules or any ancient Greek statue looking like the average day American? Or can you imagine a marvel superhero with a beer gut?