Why do you feel dizzy and sleepy when it is hot, and your whole body hurts to death after staying in the office for a day?

Because of the physiological changes brought about by seasonal exchange. Under the influence and stimulation of low temperature, the capillaries of the skin contract, the blood flow is relatively reduced, the sweat glands and pores are closed, the heat dissipation is reduced, and the normal body temperature is maintained. After entering summer, with the increase of temperature, human pores, sweat glands and blood vessels begin to relax, and skin blood circulation is also vigorous. So the blood supply to the brain will be relatively reduced. As the weather gets warmer, the metabolism is gradually vigorous, the oxygen consumption is increasing, and the oxygen supply to the brain is inevitably insufficient. The benign stimulation of temperature inhibits the brain to some extent. So people will feel sleepy, feel sleepy, and always feel that they don't get enough sleep.