To be honest, I went through a phase in my youth of obsessively eating only chicken breast, which turned out to be a mistake. Initially, I was thrilled by the weight loss, but soon I suffered from chronic indigestion, skin breakouts, and a persistent feeling of dizziness. The benefits of a protein-rich diet are clear: it provides prolonged satiety and prevents muscle loss, which helps maintain your basal metabolic rate. However, the drawbacks are equally evident. Excessive protein can strain the liver and kidneys. In TKM, individuals with 'Spleen Deficiency' (Bi-heo, 脾虛)—meaning weakened digestive and transformative functions—cannot absorb protein efficiently, which can lead to the accumulation of toxins in the body. Furthermore, those with significant 'Phlegm-Fluid' (Dameum, 痰飮) or 'Blood Stasis' (Eohyeol, 瘀血)—metabolic waste products residing in the body—may experience worsened indigestion and edema if they suddenly switch to a high-protein diet. Therefore, rather than following a universal 'best food' list, I recommend first assessing your current digestive capacity. If you generally digest well, a balanced mix of meat and fish is fine. However, if your stomach always feels heavy, start by gradually increasing plant-based proteins like tofu or beans. Ultimately, a sustainable diet without the 'yo-yo' effect is only possible when you consume an amount your body can actually process. If you are unsure of your current constitutional state, please visit the clinic for a personalized consultation.