UITABLE FOR PEOPLE OF DIFFERENT FITNESS LEVELS : Whether you are a beginner or a fitness expert, you want to lose weight or want to exercise muscles, you can adjust the resistance according to your own body weight by changing the angle between the body and the sling to achieve your own exercise purpose. RELAX LOWER BACK MUSCLES : When we stand upright or sit for a long time, long-term stress will cause back pain. The suspension training strap can adjust the shape of the spine, so that the joints