After reading many articles on Vibration fitness training I turned to Overstock to see what they had to offer. I read the reviews on the Crazy Fit Vibration Plate Fitness Machine and decided to purchase it. It arrived quickly and was not hard to put together. It is quiet even on level 20. WIth knees slightly bent you will feel the burn. I did feel like I was on a ship after using it for the first few times, but that feeling has now subsided. In the first week of using it I have lost 3 lbs. and I can actually see my muscles toning. I would recommend to anyone interested in this product to see how other people use it, you can get quite creative on poses to get to different muscle groups... It is not meant to just stand there. Search on youtube for vibration fitness training to get some ideas. This machine is not just shaking you, it is causing your muscles to contract at a rate similar to a workout, but without the strain. All in all I must say it is amazing, and I feel great. Have your friends and family try it and watch them laugh as they experience this strange new sensation.