This is a marvelous motorized exercise bike. The bike is amall, yet very substantial. It is quiet and easy to use. I look forward to using this motorized bike. I definitely get a workout. I feel more relaxed and have a sense of accomplishment. I highly recommend it, and I hope there are other motorized items for use in the future. I had blood work done this past Friday, and my Physician called me on Mon. morning. All was very well except for the LDL, bad cholesterol, and it was higher than ever before. This was in spite of being careful with my diet and eating very little red meat. There will be a minimum of 45 minutes of exercise a day to include upper body.The joy of this machine is the availability. Extremely hot or cold weather, rain, air quality, or time of day will not prevent exercise.with this wonderful bike.