The reasons for dizziness after sweating are as follows: First, the expansion of blood vessels after sweating will cause the capillaries to open, and at the same time will open the arteriovenous short circuit and direct pathway, when the microcirculation is in an open state, it will make the cerebral blood flow increase and lead to dizziness. Secondly, after steaming, it usually leads to a transient lack of oxygen in the brain, which can lead to dizziness if you are in a closed and unventilated environment. Third, the most common cause of dizziness after the steam is also a transient hypoglycemic reaction, in the sweat of the body in a state of negative nitrogen balance, the need to consume and decompose excess body heat, anaerobic glycolysis and gluconeogenesis state. At this time, too much glycogen is consumed and a hypoglycemic reaction occurs. When blood sugar is less than 3.9 mmol/L, a hypoglycemic coma can occur, resulting in dizziness.