Waist training is a body shaping technique in which a person wears a corset for hours a day to compress the core. As a result of wearing the corset, the waist is supposed to be permanently decreased to a desired size.
According to medical experts, waist training is not an effective method of shrinking waist size. Once the corset is removed, the waist returns to its natural size. While wearing the corset, the wearer can experience discomfort, problems with moving, and breathing difficulties. Experts believe the only way to effectively shrink the waist is to eat healthy and exercise on a regular basis.