Above: Stomping around the City of Haze will cause all kinds of problems
Once you gain the ability to air-kick (down and the jump button while in the air), you can fling yourself at these shelves to send crap flying in all directions. It's a small, petty activity, but damn is it ever fun. Similarly, there's a butcher's shop in the upper left hand corner that you can visit. Once there, smack around an assortment of hanging meats just to prove you can. Punch 'em with just your fists and they turn into Ground Meat, an item needed for an early quest. Even dead, half-prepared creatures are a nuisance that Jonathan feels he must attack.
