A very tough 80-year-old man died suddenly. What is the reason?

Let me help you analyze it. I heard that he caught a cold, and the yang in his body had to deal with the invasion of external evils. Therefore, it is necessary to mobilize all the organs of the body to maintain the dynamic balance of the body. At this time, the body's yang is more vigorous, and metabolism and blood circulation are accelerated. In addition, the blood vessels of the elderly are basically hardened. Therefore, blood pressure will definitely rise, which has a great impact on the aging heart. If the heart can't accept it, just follow the motor.