1. Body immunity is low. Although using skimmer to lose weight has a certain effect, human body consumes too much fat and energy, which will endanger health and make human immune system low. 2. Skeletal muscle injury fat reducer burns body fat by vibrating muscles. It is a passive exercise, and the body is not prepared and accepted, which is easy to cause skeletal muscle injury. 3. Visceral injury liposuction machine is to lose weight by strong shaking. When using the liposuction machine, strong shaking will make the internal organs shake together, causing certain damage. Pay attention to the general equipment type. Tools that change physical fitness through external forces have side effects on the body. It is suggested that you can run more, jog and run fast, and do some push-ups and skipping rope in the middle, which can obviously reduce fat and slim down, and turn excess fat into elastic lean meat.