Most people know that exercise can make people strengthen resistance and prevent the occurrence of disease, but when it comes to exercise can also cause dizziness and headache, people are still not clear, and do not know what to do when encountering this situation, for what causes dizziness and headache during exercise? Reasons for dizziness and headache caused by exercise 1, dizziness and headache caused by exercise is the manifestation of insufficient heat in the body. When dizziness, lightheadedness and other symptoms occur in the exercise for a period of time before the beginning or near the end of the exercise, especially in the outside temperature is too high or too cold conditions when these symptoms, the cause may be related to the lack of heat in the body, blood glucose content is reduced. So in the hungry state to participate in a long time exercise is easy to occur dizziness, weakness, sweating and so on is this reason. 2, caused by some diseases. Suffer from chronic rhinitis, sinusitis, inner ear disease, anemia, hypertension, in the exercise can appear dizziness, dizziness or headache. In adolescents, especially female adolescents, dizziness, pallor, panic and other symptoms during exercise are often associated with low hematocrit. For this kind of cause of dizziness, dizziness and other symptoms, the main should actively treat the primary disease in order to eliminate the root cause of the disease. 3, lack of exercise people engaged in intense exercise. Usually appear dizziness or headache, at the same time there are pale, shortness of breath, nausea, vomiting, muscle cramps and other symptoms. This is the body’s call organ function level can not adapt to the intense exercise when the need to respond. Dizziness also occurs when the respiratory rhythm is not good, so that insufficient oxygen occurs in the body. Sometimes too early after the disease to participate in intense exercise, fatigue after participating in sports or insufficient sleep to participate in sports or competitions, can cause fainting, dizziness, headache and a series of symptoms.