Step 1: straighten your back-pull the "loose fat" in your stomach.

Linear stretching is not good, it should be extended infinitely upwards. Imagine someone pulling you to the limit and letting you see the feeling in the distance. Don't lift your chin forward. My stomach feels stretched.

Step 2: Relax your shoulders-you can feel "abdominal stretching"

Pull your shoulders back gently instead of shrugging.

The third step: abdominal distension-natural breathing is more in place.

Keep your back straight, pull your shoulders back gently, and tighten your abdomen. Never shrug your shoulders at this time. Don't stop breathing or hunch over. Once a day, 30 seconds is enough!