Try not to drive. Generally speaking, the fitness environment of 25-32 degrees Celsius is most conducive to the secretion of adrenaline, which can bring better fitness effect. That is to say, if you feel a little hot during fitness, the fitness effect is the best at that time. Because you consume a lot of physical strength, you need to breathe a lot of fresh air and emit a lot of carbon dioxide. Especially in the gym, if there is no good ventilation and convection device, it will lead to the continuous circulation of exhaust gas in a limited space, which is unfavorable for exercisers doing aerobic exercise.