Observation: Very few overweight folks.
Observation: Virtually no one casually dressed. Not even street vendors.
Everybody walked in those days. And because they didn’t have enclosed interiors in those days, autos were stored in the wintertime
There was literally no such thing as casual dress in those days. It was also not uncommon for a man to only own one suit. He would wear the same suit day after day for years, having it repaired as needed and sometimes even washed.
When at the beach, men had the option of renting a "bathing suit" at a bathhouse. That was probably the only time in a man's life when he was seen in public without a full dress suit.