Dizziness can occur after a girl stands up from squatting, which is often caused by postural hypotension, which is a lack of blood supply to the brain due to lower blood pressure, referred to as a TIA transient ischemic attack. These girls tend to be longer, thinner, and contain less water in their bodies, and the diameters of the skull brains of girls and boys are actually similar. Therefore, for girls, a small amount of blood but to supply the same size and volume of the brain, it is easy to lead to cerebral blood supply deficiency. If the patient squats for a long time during the squatting process and gets up more violently, most of the blood will accumulate in the legs and lower body due to gravity, and when standing up violently, although the person has stood up, but the blood is often still gathered in the lower body. In turn, the blood supply to the brain will be reduced, and when it is reduced to a certain level, the patient’s tolerance for hypoxia and more sensitive to the brain may lead to insufficient blood supply. This lack of cerebral blood supply is often transient, and the likelihood of dizziness due to postural hypotension decreases as the patient’s squatting time decreases, the squatting speed slows, and the patient becomes larger and heavier.