Many people have developed the habit of waking up early in the morning to exercise, which can be called the “chicken dance”. But from the medical point of view, the morning is not the best time to exercise, because the onset of cerebrovascular disease patients and death time is often in the morning, a doctor in the United States, the study of 5000 cases of cardiovascular and cerebrovascular disease death time, found that 2/3 of the patients died at 6:08 am. The main reasons are: First, after people get up in the morning, about 6:00 a.m. blood pressure began to gradually increase, heart rate also gradually accelerated to 10:00 a.m. to reach the peak, at this time there are strenuous activities, the most likely to occur accidents. Second, the aggregation force of platelets is obviously strongest at 6~9 a.m., and the viscosity of blood also increases, which makes the blood most prone to coagulation and thrombus formation, and increases the chance of cerebrovascular infarction. Third, after a night’s sleep, the body’s water loss with the respiratory tract, skin and poop, etc., which makes the body lose water state, the blood in the blood vessels also become sticky flute, and thus prone to thrombotic infarction. Tips: 1, evening exercise is good for health. 2, after waking up in the morning should continue to lie in bed for a few minutes, and then slowly get up. Remember not to get up immediately, and when you get up, do not move too hard. 3. In order to replenish the water lost during sleep at night and avoid causing blood stickiness, you should drink a glass of warm boiled water before going to bed at night and after waking up in the morning.