I'm 58 yrs old. I was working out on alot of things, but do to my age, I was having problems with my knees. But then I ran across this rower and thought that I would try it. I got it and it was very easy to put together and I've been using it ever since I got it. When I started just a few months ago my weight was 217 and today I'm 194. This machine is doing what others couldn't do for me. I sit in front of my TV and just get after it.. There are different powers you can use, but for right now I'm doing just fine with the one I'm using. This rower works everything with no problems. I'm giving it 5 stars just because, its doing what other machines couldn't do for me. No stress on the machine and the work outs are at my pace. I like it very much. No BS. By the way, I'm a 100% Disable American Veteran. So I know how to work out, and this to me, is a very easy workout with great results. My doctor has ask me what have I been doing to get like this after many years of nothing. I tell him, I've been rowing a boat in my living room. He just laugh, until I show him a picture on my cell-phone. He isn't laughing anymore.