9. "get a concept 2 rower or skierg" In response to In response to 0
both are around $1100-1200 including shipping and are incredible conditioning tools, with zero impact. I have a skierg at home and I love it. You can mount it to the wall or buy the platform and attach it to that, and then it rolls around. The rowers can be stood up against the wall when not in use as well(If space is a concern).