I ended up rowing over 4mm in that first full season. The health benefits were unbelievable. My resting heart rate went from 68 to 48, systolics and diastolic blood pressure both dropped by 8, I lost 3" on my waist and lost 12 pounds. At a recent physical exam, my doctor was amazed and said that I had put 10 years on my life. All this from non-impact exercise that is easy on the body.