Q. When I'm on a diet, do I have to eat only chicken breast? Are there any other proteins you would recommend?

In Traditional Korean Medicine (TKM), we generally discourage sticking to a single food source for an extended period. While chicken breast is convenient and effective for muscle building and calorie control, consuming only dry, lean meat when the digestive system is in a state of 'Spleen Deficiency' (脾虛) can easily deplete your digestive energy. This not only slows down your metabolism but also causes undigested waste to accumulate as 'Phlegm-fluid' (痰飮), making your body feel heavy and sluggish. Furthermore, when the circulation of Qi and Blood is hindered, it creates an environment where 'Blood Stasis' (瘀血) can easily develop. Therefore, I recommend rotating your protein sources based on your individual constitution. If you have a 'cold' body type or suffer from poor digestion, beef or white-fleshed fish—which possess 'warm' properties—will be much easier on your stomach. Conversely, if you have a lot of internal heat or suffer from constipation, it is better to clear that heat by consuming duck, pork tenderloin, or plant-based proteins like tofu. The most important factor in dieting is sustainability; by listening to your digestive capacity and diversifying your protein intake, you can achieve your goals without exhausting your body’s fundamental energy.