I have better experience with aerobic exercises than anaerobic (ie unlike most other people). Even in regards to strength. Weightlifting never helped me; I peaked at some low point, and I stayed there. However, after some aerobic exercises, my max strength reached a relatively high level.
So, I am quite satisfied with my back strength due to a rowing machine. Skipping rope helped a lot with my calves. However, I have never been able to build up my chest significantly. Pushups have helped somewhat, but I feel even that may be a little too heavy (compared to what have helped other muscle groups).
I am not writing this to start an aerobic vs anaerobic discussion; I have had enough of those. Rather, I am looking for something of an equivalent to a rowing machine for the chest. I want suggestions for how I can train my chest aerobically.