It has become the fashion on hot summer days, for people to sit outside cafes and bars; exposing as much flesh as they can legally get away with.
That would all be very well, if we all had the figures of Greek gods and goddesses. Unfortunately, the majority of us don't.
I find, and I suspect that many others find, the sight of flabby beer bellies, paunches and undulating sweaty rolls of fat to be very off-putting; both aesthetically, and in terms of appetite when eating.
Please have some consideration for others, and cover yourselves up in public areas.