Winter is coming, and spring is coming. Without heavy winter clothes, many people begin to care about their arms and belly lines, but people often forget an important part-"back". Especially with the growth of age, the back is easily pulled out by underwear, which not only looks old, but also looks ugly. Hirohiko Nakayama, a well-known traditional chiropractor in Japan, said that there is a "latissimus dorsi" covering a large area on the back of the human body, which is the only muscle that directly connects the arm and the lower body. If you don't use this muscle properly, your shoulders will move forward, causing your back to bend and form a hunchback, and your pelvis will also tilt, which will lead to fat accumulation, slow blood flow, and fat and edema will spread on your body! Back fat not only affects the appearance, but also signals the aging of the body. Sun Yat-sen put forward the "immortal bird posture", which draws the originally opened scapula closer by raising the arm upwards and then lowering it downwards, and the latissimus dorsi muscles stretch and contract greatly, thus improving the body function and eliminating the annoying back fat. After getting up, adjust your posture for a day, your back will become flexible and your spirit will be better! Step 1: Keep your feet shoulder-width parallel, put your hands together to form a pistol shape, extend your arms backwards, and point your fingers backwards as far as possible. Step 2: Open the palms of your hands outward. At this time, put your arms behind your ears. Step 3: Turn your palms outward and bend your elbows until they form a 90-degree angle. The scapula is closed 1 sec, once. Do it three times at a time and three times a day. Remember to look ahead and don't lower your head when you do it, so as not to be ineffective. This action can also be done sitting, with the chair shallow, the sole of the foot on the ground, the back straight and the pelvis upright, and then follow the above steps.