Health-preserving pile, also known as tai chi pile or static pile, is a traditional health-preserving method. Its training methods and essentials include the following points: 1. Posture: Choose an appropriate posture, usually standing, and keep your body straight with your feet shoulder width apart. The arm hangs naturally, the palm faces the body and gently fits the inner thigh. 2. Breathing: mainly deep and slow abdominal breathing, keeping breathing smooth and natural through nose and mouth breathing. When inhaling, the abdomen expands forward; When exhaling, the abdomen contracts. 3. Attention: Focus on the feeling and breathing of the body, eliminate distractions and calm your mind. You can close your eyes and increase the effect of introspection. 4. Stability: keep the body balanced and stable, and the center of gravity is evenly distributed between the feet. Pay attention to the relaxation of all parts of the body, especially the neck, shoulders and arms. 5. Duration: According to personal physical condition and comfort, each exercise can last for 5 minutes to half an hour. Gradually increase the time and frequency to improve the effect. 6. Internal and external combination: while practicing piles, observe the physical feelings internally and breathe naturally on the outside. The combination of thought and action can relax and reconcile body and mind.