I do the first section alone so I can see if I like how the colors line up then I do the remaining ones as an assembly line. Sometimes I chain, sometimes I clip in between, all depends on my mood at the time.
My iron is across the room as my one attempt at "exercise"...at least I have to rotate out of my chair, get up, walk 6 steps and then come back. It also helps me from getting stiff from sitting too long in one place.