The costliest tradeoff for commuting is working out. It's hard to exercise after commuting due to general exhaustion from the work day. Waking up very early to work out before the commute can have bad effects productivity for that day.
I put a power rack in my home, trying to treat my fitness like I treat brushing my teeth. I just need a few more bits of equipment to ship in and I will see how it will compare to going to the gym and wasting all that time there.
I have a long commute (apparently I am a super commuter), and work out in the morning, as long as the train is not fcking late... again. I've noticed that crossfit in the morning gives me MORE energy throughout the day. Gone are the 3pm doldrums.