Water evaporates from people's skin all the time, but when the weather is hot or exercising, it sweats a lot to help the body dissipate heat and keep the body temperature balanced.
Whenever you sweat, sweating a lot will only make you lose water, not lose weight. For example, people who eat laxatives to lose weight, although they lose a lot of weight after a round of heavy diarrhea, only the water in their bodies is lost, so they soon rebound. If you sweat because of exercise, then when the exercise time is about 1.5 hours, the body fat starts to burn, and then sweat really plays a role in losing weight.
Function.
So you can't lose weight by sleeping and sweating at night. Let's keep your weight down steadily by controlling your diet and exercise.