If you aren't seeing changes despite consistent treadmill use, it is likely not due to a lack of effort, but rather a decrease in your body's 'metabolic efficiency.' From a Traditional Korean Medicine (TKM) perspective, weight loss is not just about burning calories, but about ensuring the smooth flow of Qi and blood. If this flow is obstructed, exercise efficiency drops significantly. First, you may be suffering from 'Dameum' (phlegm-fluid retention), where metabolic waste accumulates and hinders circulation. This is like having residue in an engine; no matter how hard you push, the body feels heavy and tires easily. Second, a condition called 'Bi-heo' (Spleen deficiency) can occur, where weakened digestive functions fail to produce sufficient energy. When you force exercise without adequate energy, the body enters a 'survival mode' and actually lowers its basal metabolic rate to conserve energy. Furthermore, 'Eohyeol' (blood stasis)—the accumulation of stagnant blood—can impede circulation, slowing muscle recovery and increasing edema, which makes weight loss feel stagnant. The key is finding the 'optimal intensity tailored to your constitution.' Rather than walking blindly, it is essential to identify and resolve these internal blockages first to revitalize your metabolism.