These regimens certainly have distinct advantages and disadvantages. They can be effective for those needing a quick transformation for a major event, providing a strong sense of motivation. However, they carry the risk of nutritional imbalances, leading to issues like thinning hair or loss of skin elasticity. From a Traditional Korean Medicine (TKM) perspective, extreme restriction can lead to a state of 'Spleen Deficiency' (Bi-heo), where the digestive system weakens, often causing the body to bloat easily and regain weight even with minimal intake. Furthermore, the accumulation of 'Phlegm-fluid' (Dameum, or metabolic waste) can trigger an early weight-loss plateau. I advise focusing on your body's specific state rather than blind imitation. For those with high physical strength and 'Blood Stasis' (Eohyeol), temporary fasting can help detoxify. However, for those lacking 'Qi' (vital energy), it can be detrimental. It is crucial to determine whether your condition is 'Spleen Deficiency' or 'Qi Stagnation' (Gi-che). By combining constitution-based herbal prescriptions and acupuncture, you can achieve your goals without exhaustion. I am here to help you navigate this healthy journey.