So pretty simpe question what kind of cardio do you do, how long, and how many times a week? The only cardio I do is jogging and sprinting intervals, its been like that for years which is one of the reasons I think my bottom half is so big and top half so small. I am thinking of switching to rowing and boxing only for cardio to increase the stimulation to the upper body in the same way jogging would do to the lower body.