To lighten the mood, does Steven work out at the gym? Because I always think of Steven as muscular (at least slightly) and hot. If so, does Brendan peek Steven's workout routine?
YES! He absolutely works out! Rocks are heavy and I think Steven would be heartbroken if he found a big, cool rock that he couldn't pick up. So he lifts regularly to make sure this never happens. No rock left behind.
I headcanon that Brawly is his personal trainer. Brendan and Wallace hang out on the bikes or something and watch disrespectfully while Steven works up a sweat.
I've actually put a lot of thought into how each of the Hoenn boys is built. Steven is the strongest and most muscular of the three (I know his pokemas model makes him look super skinny, but I've decided to ignore that lol). Wallace is also somewhat muscular, but he's not as beefy as Steven since he prefers to maintain a slim figure. And Brendan is skinny, but still athletic since he's always riding his bike.