Most corsets on the market are made of strong elastic fibers. By gathering excess fat from some parts of the body to a certain part, the chest is round and full, and the figure is tall and straight, thus achieving the effect of "body shaping". However, the slim figure shaped by corsets is only temporary, and it can't really reduce body fat and achieve the effect of losing weight. Some corsets use the principle that cloth is airtight, which makes people sweat after wearing it, giving people the illusion that they can lose weight after wearing it for a long time. In addition, some incompetent fitness instructors teach the so-called "slimming training by wearing body clothes", which makes people keep running or dancing rhythmically, thinking that this can achieve better slimming effect. In fact, because bras are generally airtight fabrics, the human body is wrapped inside, and it begins to sweat in less than ten minutes; At this time, the corset can't absorb more and more sweat, which leads to poor perspiration. After some strenuous exercise, people will have difficulty breathing and even collapse.

In addition, you can often see bustier with holes in the market, which looks like a swimming ring. Hot air can be injected from the hole to accelerate human perspiration and make energy consumption faster. Business promotion: wearing this bra is like taking a sauna every day; With strenuous exercise, the weight loss effect is excellent. However, wearing such a corset will lead to a large loss of water and rapid consumption of energy in the body, leading to severe dehydration and even heatstroke.