A health coach highlights eight common eating habits that can negatively impact gut health, even with healthy food choices. These include consuming large amounts of raw salad at night, not soaking lentils and beans, drinking water with meals, overeating healthy millets, and excessive curd or buttermilk consumption. The expert advises switching to cooked vegetables in the evening, properly soaking legumes, drinking water before or after meals, moderating millet intake, and being mindful of curd consumption to avoid digestive issues like bloating and gas.