For my cardio, I decided to change things up a bit and went to the rowing machines. I normally run 6 miles in an hour on a hill program with inclines up to 10 degrees. I can do this with very controlled breathing, going about 1 breath for every 3-4 steps. Now with the rowing machine I'm obviously going too quickly. After 25 minutes I was kicked. You definitely get more of a full body workout with the rowing. I went about 33 strokes per minute for a total of 5200 meters. Anyone have any idea for a number that would give me the same length of workout I get from my running? I plan on changing it up every week. One to keep things different and two to lessen the pounding on the joints. The elliptical is just something I won't be doing.