I completely understand the desire for quick results; I've experienced the trial and error of extreme fasting in the past, only to find myself too dizzy to function in daily life. While short-term diets offer the advantage of immediate visual motivation and a feeling of lightness, the drawbacks are significant. You risk losing muscle mass, and your body may enter a 'survival mode,' creating the perfect environment for the yo-yo effect. From a Traditional Korean Medicine (TKM) perspective, rapid weight loss often strips away surface weight without addressing the underlying 'Dam-eum' (痰飮, accumulated phlegm-fluid or metabolic waste) and 'Eo-hyeol' (瘀血, blood stasis). Specifically, those with 'Bi-heo' (脾虛, Spleen deficiency or impaired digestive function) may experience a severe drop in vital energy and a further slowdown in metabolism if they fast aggressively. Ultimately, the right answer depends on your individual condition. The first step is to determine your current metabolic capacity and identify where waste products have accumulated. Just as wearing clothes that don't fit is uncomfortable, a diet that doesn't match your constitution is counterproductive. I encourage you to visit the clinic so we can examine your current state and develop a personalized strategy tailored to your body.