I have had my rowing machine for about a year now and I am still using it about 30 minutes, three times a week. My stamina is much better than it was when I started and my resting heart rate is about 51 bpm when watching tv. This evening I did 1137 strokes in 30 minutes, not my best ever but not bad considering I did it yesterday as well. Even rowing hard, my heart didn't go much over 160 bpm and I don't get breathless, I can handle it.

