The yo-yo effect often arises from disrupted Qi and Blood circulation. When food intake drops during a diet, the Spleen’s transportation and transformation functions slow down, easily leading to Spleen Deficiency. After the diet ends, intake rises again, but because Spleen function has not yet recovered, the body stores nutrients more aggressively than before. Therefore, preventing rebound weight gain requires correcting your individual constitutional state of Qi and Blood, rather than simply prolonging caloric restriction. 【For those with weak Spleen and Stomach】 If you have an uncontrollable appetite, feel dizzy when meals are delayed, or experience abdominal bloating, Spleen Deficiency is likely. Herbal medicine is used first to tonify the Spleen; once digestive function stabilizes, meal portions naturally self-regulate. If Blood Stasis is also present, blood-activating medicinals are added to foundational Spleen-tonifying formulas such as the Four Gentlemen Decoction. 【For those with impaired Qi and Blood circulation】 If your hands and feet remain cold during a diet, your limbs feel swollen and heavy, or you suffer from constipation, your Qi and Blood may not be flowing smoothly. This indicates accumulation of Damp-Phlegm and Blood Stasis, with metabolic wastes building up inside the body. Exercises and stretches that promote Qi and Blood circulation are combined with herbal treatment focused on eliminating internal turbidity. 【Practical principles】 First, do not revert to your previous diet the moment the diet ends. Your body enters a phase where it tries to store reserves more aggressively. Increase gradually by roughly 1–2 kg per week. Second, ensure adequate protein at every meal, as protein is the foundation of Qi and Blood production. Third, secure at least six hours of sleep. Sleep deprivation raises the hunger hormone ghrelin, making binge-eating impulses more likely. I see the yo-yo effect as "making a deal with your body." When you diet, the internal conditions change: your Qi and Blood have become weak, yet if you suddenly eat a lot, your body stores even more. That is why I recommend first recovering Qi and Blood in a way that suits your constitution, and then matching your diet to that restored state. If you are unsure which constitution type you have, an in-person consultation is the most accurate way to find out. Through a Traditional Korean Medicine diagnosis of your individual Qi and Blood status, we can create a personalized plan that helps you manage your weight without yo-yo rebound.