Bought this for my mother who has circulatory problems with her legs (PAD). Prior to using this, she had growing numbness in her left leg down to and involving her foot (especially on rising in the morning). After using it a couple of days, she had no more numbness, and much less pain. She is 81 years old, and peddles 1-2 miles a day on this (where 2000 revolutions equals a mile). Her physician told her she had to walk, and she does, but since walking involves the whole body (weight bearing), and tires her easier, she is getting more exercise without having to bear as much weight (sitting position). I did not know if this would work for her, but so far, it is a God send. My mother still golfs, and is an active senior, but in bad weather, or for whatever reason, she can pedal in the privacy of her home. Since PAD seems to be worse at night when legs are up on a bed, pedalling before bed seems to help with the pain by stimulating the circulation. She tells me she feels like she is getting her sense of wellness back again. Money well spent for that priceless statement! I recommend this to anyone who can still pedal, and who has circulatory problems Not to sound like everyone else, but it actually improved circulation. She says she has had no problems with the machine at all, and she is putting it through a workout every day.