Treadmill down dizziness may be caused by the following conditions: First, there may be hypertension, because when a person’s blood pressure rises, it will produce a certain stimulation and impact on the cerebral blood vessels, cerebral blood vessels under the impact and stimulation will reflexively contract, or even spasm, resulting in a reduction in blood flow in the blood vessels, further causing the brain ischemia and hypoxia, if the brain ischemia and hypoxia is serious, it will cause the brain If the cerebral ischemia and hypoxia are serious, it will cause the brain’s energy metabolism to be impaired and cause the brain’s nerve function to weaken, which will produce the feeling of dizziness. Secondly, it may be caused by tension, excitement or nervous excitement, because when people exercise, sympathetic nerves are more excited, the body’s adrenaline and norepinephrine content will also increase, these combined factors will cause vasoconstriction throughout the body, especially cerebral vasoconstriction will cause the brain ischemia, hypoxia, causing a lack of energy and nutrients in the brain, resulting in dizziness or vertigo.