Dizziness after exercise may be due to a variety of reasons, but is generally a normal physiological phenomenon. 1. Exercise intensity is too large: it may be due to the exercise intensity is too large, the body can not adapt to a moment, or after the exercise did not replenish the energy, resulting in hypoglycemia, dizziness, panic, sweating and other symptoms. 2. Insufficient blood supply to the brain: Due to the lack of exercise on weekdays, sudden exercise causes a momentary insufficiency of blood supply to the brain, and symptoms such as dizziness, nausea and vomiting occur. Or due to the cessation of exercise, the rhythmic contraction of muscles also stops, not able to blood flow back to the heart, so that the amount of blood back to the heart decreases, the blood volume of the brain decreases, and temporary cerebral blood supply insufficiency occurs. 3. Elevated blood pressure: blood pressure may rise after exercise, with increased sweating after exercise, to a certain extent, blood volume will fall, and fluctuations in blood pressure will lead to symptoms of dizziness. Note: If you suffer from chronic rhinitis, anemia, hypoglycemia and other diseases, dizziness can also occur after exercise. If the symptoms of dizziness persist after exercise, it is necessary to pay attention to it and actively go to the hospital to avoid delaying the condition.