Normal people can excrete about 1 liter of sweat after sweating for 40 minutes. As mentioned above, the metabolites discharged by far-infrared hyperthermia can lose weight, because the discharge also includes excess subcutaneous fat. People who lose weight by far-infrared hyperthermia had better adopt repeated methods, that is, heating → plenty of hydration → sweating → showering → heating → plenty of hydration → sweating → showering, with the best effect.