1, cardiovascular system diseases: when driving fast, the driver’s tension is much higher than usual, the cardiovascular system will have a negative impact. First of all, a high degree of emotional stress, people in a medical condition called “stress”, the endocrine system will also be in a state of abnormal work. The most typical manifestation is the increase in secretion of angiotensin and adrenaline, which leads to higher blood pressure and faster heart rate. As you know, the normal heart rate is about 60 beats per minute, but when the speed exceeds 80 kilometers per hour, the heart rate will increase to 100D110 times; when the speed is more than 120 kilometers per hour, the heart rate can exceed 110 times. We usually participate in sports, although the heart rate will also reach the above value, but after the end of the exercise, the heart rate of healthy people will quickly return to normal in a short period of time. High-speed driving, especially for a long time, so that the heart rate is always under the fast frequency, the heart will appear “fatigue” phenomenon. In addition, a long time to drive fast, because at any time to make emergency response, in addition to the arms, the legs should always be from the gas pedal, brake, will have an impact on blood circulation. 2, skeletal system diseases: when driving fast if you encounter unexpected events, rapid braking powerful inertia will make people’s head, upper trunk suddenly lean forward, it is easy to hurt the neck and back muscles, cervical spine and spine. If the road is uneven, frequent bumps will increase the wear and tear of the intervertebral discs, and even trauma. In addition, the constant acceleration and deceleration movements and inertia can also cause discomfort to the internal organs. Even nausea, tinnitus, vertigo and other symptoms. 3, psychological disorders: driving fast for some people is a means of cathartic anxiety. In turn, driving fast for a long time will also change the mood of people, inducing impatience, irritability and other bad mood. Over time, some people may develop psychological disorders. Therefore, when driving try to maintain a calm state of mind, relaxed and slow not only can adjust emotions, relieve fatigue, but also a way to protect health.