Can using a meridian brush on the back help reduce back fat?
Generally speaking, using a meridian brush to brush the back can usually help make the back thinner, but long-term persistence is required. The detailed explanation is as follows:

The meridian brush can stimulate the meridians and acupoints on the back, helping to unblock meridians, regulate qi and blood, relieve fatigue, and promote the metabolism and absorption of back fat. For areas where fat tends to accumulate, such as the upper back and the lumbosacral region, brushing with a meridian brush can accelerate blood circulation and metabolism in these areas, thus helping to reduce fat accumulation. Brushing the back with a meridian brush also provides a certain massage effect, relaxing the back muscles, improving posture, and making the back appear thinner visually.
However, brushing the back with a meridian brush cannot directly cause a significant reduction of back fat, so its effect in making the back thinner is limited. Additionally, if an individual naturally has very developed back muscles, a large frame, or a broad and thick thorax, brushing the back with a meridian brush may have little effect on improving the back's appearance.
Better back-shaping results can be achieved if a healthy lifestyle is maintained while brushing the back, such as eating a balanced diet, reducing intake of high-calorie and high-fat foods, and engaging in aerobic exercises like jogging or swimming.