I've actually tried some of those 'low-sugar recipes' trending on social media out of curiosity. Interestingly, I occasionally experienced dizziness or insomnia after drinking them. Before building my clinical experience, I also fell into the trap of believing that 'lower calories always equal better results.' There are clear advantages to these custom drinks: they help maintain a diet by reducing refined sugar intake while providing psychological satisfaction. However, there are caveats. Depending on one's constitution, artificial sweeteners can cause indigestion, and excessive caffeine can lead to a state of 'forced energy,' where the body exhausts its reserves rather than generating true vitality. From a Traditional Korean Medicine (TKM) perspective, those in a state of 'Spleen Deficiency' (Bi-heo/脾虛), characterized by weak digestive functions, may experience increased bloating when consuming cold drinks or those containing sugar substitutes. Furthermore, for individuals with an accumulation of 'Phlegm-Fluid' (Dam-eum/痰飮)—metabolic waste products in the body—it is far more efficient to promote circulation with warm-natured teas than to force wakefulness with caffeine. Ultimately, the answer is that it depends on the individual. A recipe that works for others may be like wearing clothes that don't fit your own body. First, check whether your body is currently experiencing edema (swelling) or a severe lack of energy. Selecting a beverage based on your current physiological state is the smartest way to approach a diet.