When using this jiggle slimming machine, few people will do warm-up exercise, thinking that it is passive exercise and will not damage joints and ligaments. However, if the frequency of shaking is large at first, it is likely to damage small joints such as lumbar vertebrae, cervical vertebrae and ankle joints, and the elderly are more likely to be injured. In addition, some heavy joints will bear greater pressure when shaking, and long-term use will easily lead to diseases such as lumbar disc herniation, cervical spondylosis and meniscus injury. In addition, the biggest harm of this jitter is that it may lead to visceral congestion, so it must be used with caution. Actually, fat can't be decomposed by shaking. The reduction of local fat after shaking is often due to the migration of fat to other parts, rather than the real reduction. Losing weight is sometimes due to the reduction of water in the body caused by sweat discharge.

In order to lose weight, there are many beneficial exercises to choose from, such as swimming, walking, cycling, supine straight leg lifting or resistance training, flexion and extension activities of non-load-bearing joints, etc., but incorrect excessive exercise will aggravate osteoarthritis.