Wonder Core with bicycle, you're getting resistance on the way down and up with every rep. With dual resistance, you're getting double the workout in half the time! Wonder Core provides a full 180 degree range of motion. That means you can isolate and train your lower, middle, and upper abs more range of motion means a much tighter core! Wonder Core is totally adjustable to your fitness level! You'll get the ideal amount of resistance on the way down and have the right amount of support customized to your exact fitness level coming up. That means everybody can do it! And Wonder Core has a twist! Now you can blast away your love handles with the built in Wonder Core twisting seat to target your obliques, then a quick tuck for your lower abs before you're done. Best of all,  Wonder Core with bicycle , you're nestled in an ultra-comfortable seated position with your head and neck fully supported through the full range of motion. The thick foam cushion supports create an invigorating massage up and down your back as you train. This feels fantastic and will revitalize your spine and back so you walk away feeling wonder-full. Wonder Core is even great for back pain! Its ergonomic arc design can fully stretch your back. You will feel incredible relief by simply laying on it.  Multi-weight instrument with health bikes function. Rowing exercises, abdominal exercises, leg exercises, Hip exercises, forearm exercise.