Point 1: Keep your chin close to your neck, raise your head, and then bend sideways.

The second point: the left shoulder sinks.

Point 3: Stop immediately if you feel any discomfort, and hold on for 10 second.

2. Left chest stretching target parts: pectoralis major and pectoralis minor.

Point 1: shoulders slightly lifted.

Point 2: the left foot is in front.

The third point: the upper body leans forward, turns right, leans over, stretches from multiple angles, and persists for 15 seconds.