Spring has arrived, but the early spring temperatures in the northeast are unstable, alternating between warm and cold spells, and it takes a few reciprocals to usher in the true blossoming of spring! In this cold spring season, the temperature difference between morning and evening, so sincerely remind everyone to do a good job in the prevention of cardiovascular diseases. 1, morning exercise should not get up too early. Cold stimulation will make your blood vessel contraction, blood flow slows down, which leads to insufficient blood supply to the heart and brain, inducing elevated blood pressure, angina pectoris, myocardial infarction, cerebral thrombosis and so on. 2, has suffered from cardiovascular and cerebrovascular diseases should not be too much exercise. Appropriate exercise will increase the blood supply to the heart, brain and all parts of the body, so as to enhance and improve the corresponding functions, and also facilitate the recovery of some chronic diseases and improve the symptoms; on the contrary, exercise overload (excessive exercise) will increase the blood and oxygen demand of the heart, brain and all parts of the body, which will make the original disease recur or aggravate, and even new ischemic diseases. 3, is taking some treatment of cardiovascular and cerebrovascular disease drugs, do not increase or decrease their own medication. For example, patients with high blood pressure should not change the dosage of medication or the number of times of taking medication according to one or two measurements, and they should strive to get the doctor’s advice or consent.