The redistribution of blood in the body is related to the fact that blood in a sedentary person is mainly distributed in the lower limbs and hips by gravity, and the relative lack of blood supply to the brain can cause dizziness when standing up suddenly. It may also be related to the patient’s own constitution. If there is postural hypotension, sudden standing up with relatively low blood pressure may also cause dizziness. People who have been taking terazosin, and nitrate drugs such as isosorbide mononitrate and isosorbide nitrate for a long time have a higher chance of developing postural hypotension, as well as the elderly who are more prone to postural hypotension. It is recommended that sedentary people stand up slowly to reduce the occurrence of dizziness due to insufficient cerebral perfusion. You can increase your squatting exercise to increase your ability to adapt to blood redistribution caused by postural changes.