Yeah man, I was commuting in Dickies work pants and a t-shirt but I realized that'd be a no go in the long run. Now I wear cargo shorts and some kind of technical fabric shirt (I have about 40020235323 soccer jerseys and running shirts) just to keep me slightly cooler. I too am not in the best physical shape, but I have lost about 5lbs since starting this bike commuting stuff about a month ago.