I used to say that it was ok that my r/t commute took almost three hours (30 miles), because I didn't have to go to the gym afterwards, but that really isn't true. At least for me, biking does next to nothing for the abs or upper half. It does, of course, do great stuff for cardio.

So lately I got an ebike (Trek Valencia+) which makes my commute faster and easier, especially on those hills, and I go to a gym near my job for a half hour almost every day. I've dropped 8 lbs since April 1st, my abs are in much better shape, and I no longer look like the Pillsbury Dough Boy on stilts.