The Gymstick Crank Bike X4 is the first exercise bike that also has pedals for hands. The Crank Bike can be used as a regular exercise bike, but in addition to that, you can pedal with both feet and hands. In this way, your training can be up to 40% more effective than normal cycling. Training with the X4 enables a completely new way of developing aerobic fitness as a whole. When pedalling simultaneously with all four limbs, you improve your muscular endurance, strengthen the muscle strength of the middle body parts and thus also burn more calories compared to normal cycling. With the Crank Bike, you can also pedal with your hands only, thus improving upper body muscle condition, as well as metabolism in the shoulder and shoulder region. Crank Bike X4 exercise bike is suitable for all target groups from beginners to intensive exercisers.