Elastic rods can help us shape. If you want to lose weight, you must strengthen your whole body training. For the use of elastic bars, you can tighten the muscle lines of your arms. Of course, you must use the elastic rod correctly. If the core is not stable enough or the movements are not standard, then the intensity of training is not enough. When using elastic bars to exercise your arms, you should use core strength to stabilize your arms and upper body muscles to feel the strength. This can better stimulate muscle fibers and strengthen the shaping effect.