I once suffered from severe bloating after blindly following a trendy diet. In Traditional Korean Medicine, this is viewed as 'spleen deficiency (脾虛, biheo)'. When the spleen function is weak, consuming large amounts of raw vegetables can actually become toxic. Here is how to approach Subway diets healthfully from a TKM perspective: 1) Know your digestive capacity: If you tend to have diarrhea or frequent abdominal pain after cold foods, avoid raw-vegetable-heavy combos. For those with weak digestion, raw vegetables can produce 'phlegm-fluid (痰飮, dameum)', which creates waste in the body. 2) Choose protein wisely and keep warm: Lean proteins like chicken breast or turkey are fine. However, if your body tends to be cold, pair them with warming ingredients or drink warm tea to aid absorption. 3) A small difference in sauce choice: High-sugar sauces can create 'blood stasis (瘀血, eohyeol)', hindering metabolism. Choose olive oil and pepper to improve blood flow. 4) Consider bread type: Whole-grain bread is often recommended, but if digestion is difficult, softer bread reduces strain on the spleen and stomach (脾胃, biwi), helping you sustain the diet longer. The key is not 'what others say is good' but 'what makes my body comfortable'. If you want a diet guide tailored to your constitution, it would be best to visit a clinic for a check of your digestive state.