Under normal circumstances, people's blood pressure fluctuates during the day. Keeping this diurnal variation of blood pressure minimum is helpful for the protection of cardiovascular and cerebrovascular diseases. In summer, patients fall asleep late at night and get up in the morning due to the summer heat, which leads to less sleep and lower sleep quality, which leads to higher blood pressure at night and greater blood pressure fluctuation, which aggravates the damage of cardiovascular and cerebrovascular diseases. Therefore, patients with hypertension must pay attention to heatstroke prevention and cooling in summer, ensure adequate sleep, take a proper rest at noon 1 hour to supplement lack of sleep. The air conditioning temperature should not be adjusted too low;

Because it is hot in summer, some people like to turn on the air conditioner very low, especially when they go home from outside, hoping to cool themselves down as soon as possible. When it is cold and hot, the blood vessels will suddenly change from the original relaxed state to the contracted state, which will pave the way for the increase of blood pressure. Staying in an air-conditioned room for a long time is a heat wave as soon as you go out, and your blood vessels dilate again, so your blood pressure will fluctuate all the time. If the patient reduces the dose again at this time, it will be difficult to control the disease. Pay attention to hydration: Some patients with hypertension, especially taxi drivers, long-distance bus drivers and long-distance passengers, seldom drink water in order to reduce the frequency of urination, which is very undesirable. In summer, due to the hot weather, sweating, blood concentration and less driving and cycling activities, it is easy to cause thrombosis. Therefore, patients with hypertension should first pay attention to replenish enough water and increase the intake of fresh fruits in summer. People with diabetes should give priority to green tea or cold water. Pay attention to drinking a small amount of water many times to avoid overloading the heart and kidneys with a large amount of water at one time. In addition, patients with hypertension are prone to stroke and heart disease in the morning, and some studies believe that it is related to water shortage at night. Therefore, when you wake up in the middle of the night, add some water to reduce the blood viscosity, which is beneficial to prevent thrombosis.