Yes, your pericardium is blocked. Pericardium protects the heart. If it is not properly adjusted, the heart will "have a big event." Your body is too cold. I'll teach you four simple methods: 1. Pat the inside of the elbow to get a rash. 2. Apply the whole arm with a wrung hot towel. Screw it dry! Don't get wet, you can also use a hot water bottle. 3. Soak your hands with safflower boiling water, at least in the middle of your upper arm, where you wear short-sleeved clothes. 4. Exercise: stretch your hands horizontally, palms up, and slowly rise to the top of your head. This is the most commonly used action in yoga. If you stick to it, you can feel the feeling of walking along the meridian, which proves that the meridian is still quite smooth. Try to improve them by at least 70-. Prevention is better than cure. If your body tells you, you should respond well! I wish you the best of health!