There are many reasons why weight is not only lost but increased after fitness. One reason is that some drugs are taken that have the effect of increasing weight, such as glucocorticoids, adrenal hormones, progesterone, estrogen, androgen and other hormonal drugs, all of which have the effect of promoting weight gain. So in taking these drugs while working out, can not achieve the effect of weight loss. Another reason is that certain organs or tissues in the body can secrete hormones, and once the function of these tissues or organs is disrupted, it will lead to endocrine disruption and abnormal secretion of hormones, and these abnormal hormones will act on the body, thus leading to weight gain. Weight loss requires a long period of fitness and reasonable control of diet to achieve a certain effect, through scientific and reasonable fitness, in order to effectively reduce weight and achieve the effect of slimming.