Next time enter at a different level than your seats, and take the stairs to get to them? (But not working out one day isn't a sin, either! If you totally restrict yourself from enjoying life, you will have a lot more trouble keeping it up.)
Wednesdays I have family dinners, so don't have the time to walk home after the early bus home to get my car - and use the park and ride. So I got off at a bus stop far from my building at work and walked on this end of the ride! I'm still sore from my 2 miles of walking yesterday, though, so not going to fight too hard on it...