Applying the effect on a daily basis is one of the best ways to slow or prevent the deterioration of stretched muscles, bones and joints | Robust and durable: Adjustable compact design consumes minimal space. A solid steel frame is used in this ABS rocket chair. Energy-powered Zanberry mechanism: Designed with a strong and flexible pulse to help you in both directions, making it work as a personal trainer, targeting the upper, middle, lower and inclined abdominal muscles, improving exercise efficiency in less time. Highly Adjustable: Designed with 4 adjustable levels suitable for people of different lengths, comfortable posture and targeting thigh and abdominal muscles, increasing exercise efficiency. Suitable for all kinds of sports, such as: jogging, chest pushing, stretching exercises, leg stretching, etc., it can be a good exercise for your abdomen.