Running

Fuck running. Maybe it's just me but back in my rowing days, the 2mile run we had to do as a warm up was enough for my coach to tell me I ran like a pregnant elephant.
Rowing machines ft-form of exercise other than cycling-win

Running is cheaper and gets you outside and takes you places. Some of these are the attractions I have with cycling. I'd 'almost' prefer running to indoor cycling since at least the scenery changes and you're going somewhere.