The most important thing is to use your breath. When you practice your breath skillfully, you will feel shocked with the traction of your chest muscles. 1. Breathe: Stand in front of the mirror, don't bend over, don't bow your head. With your mouth closed, take a deep breath through your nose to the limit of your lungs, so that you will see your chest protruding obviously, and you will feel your stomach sinking. Hold on like this for one second, and then exhale. Practice repeatedly. Breathe: Breathe in two stages, first slowly, then suddenly, and the rest of the breath will make you see your chest more convex in the mirror, which is a bit shocking. Hold your breath: take a breath, don't exhale yet, and support your chest with the muscles around your chest. [Main gas consumption] 2. Do it at 3 o'clock in the comprehensive breath. Directly inhale a small amount of gas, and at the same time use these gases to hold up the chest, and at the same time use gas to cooperate with muscles to hold up the chest. [Almost simultaneously, it takes 0. 1-0.3 seconds to feel it. If you want to make the earthquake bigger, you have to cooperate with your shoulders. [When shaking, the shoulders should be pulled back, and the range of the shoulders should not be too large] 3 ` When learning to shake, try to shake the chest continuously at a constant speed and gently. [Don't shake your shoulders] Because the shock on your chest is hard to describe, I hope the landlord will think about it and feel it with his body. Wish you success!