I reluctantly bought this considering what it cost. What I found after trying it for 10 minutes, you can work up a pretty good sweat, and get a good cardio workout. It’s a solid compact machine, for those of us with limited space, and funds, and wants a low impact workout. With that said, I do disagree with some of the reviews. If you’re a tall person, I don’t recommend this bike. Anybody that is an avid biker, which I used to be at one time. Your knees should be slightly bent when the pedal is down. I am 5’6”, and I have the seat as high as it can go. And it’s still slightly to low. That’s the only reason for 4 stars, other than that I do recommend this bike.