I'm planning a diet using sandwiches like those from Subway; what is the Traditional Korean Medicine (TKM) approach to this?

Many people focus solely on calorie counts, but this often leads to quick burnout and binge eating. From a TKM perspective, the focus should shift from 'what you eat' to 'how your body processes it.' First, consider your digestive strength. If you suffer from Spleen Deficiency (Bi-heo, 脾虛), a sandwich packed with raw vegetables can actually be counterproductive. Poor digestion leads to the accumulation of Phlegm-Fluid (Dam-eum, 痰飮), which makes the body feel heavy and sluggish. Second, consider blood circulation. If you are prone to edema or have Blood Stasis (Eo-hyeol, 瘀血), avoid salty sauces and incorporate ingredients with warming properties to promote flow. Third, tailor ingredients to your constitution. While whole-grain bread is a good choice, those with a 'cold' internal constitution should consider lightly steaming their vegetables or pairing the meal with a warm herbal tea to protect their digestive heat. Finally, optimize your metabolic efficiency. Combining dietary management with TKM herbal medicine to regulate your basal metabolic rate ensures that your body utilizes the energy from the same sandwich more effectively. The most efficient approach is to receive a precise diagnosis of your current physical state before finalizing your diet plan.