The following muscle groups are activated with the Revoflex extremes Abdominal muscles (upper, middle, bottom, and side) Back muscles Arm muscles Shoulder muscles Thigh muscles How it works The Revoflex Extreme takes advantage of bidirectional power. The rubber bands set up an increased resistance while pushing forward and thus achieve a more intense workout. When sliding back the built-up tension is released slowly. This returns you easily to your starting position. You can choose between 6 different training levels and 44 different exercises and thus optimally tailor your workout to your body. Scope of Delivery 1 x Revoflex Extreme 1 x Travel Bag

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