The reason why summer is suitable for weight loss: the metabolism is fast in summer, the temperature is high in summer, and the body needs heat dissipation, which will speed up metabolism. The metabolism is accelerated, the efficiency of burning fat by exercise is higher, the intake of calories is easy to be consumed, and no excess calories will be converted into fat. In summer, if you have a bad appetite, eat less and your metabolism is accelerated, blood will concentrate on the skin surface and limb circulation, resulting in a decrease in the amount of blood entering the gastrointestinal tract and a decline in digestive function. People's appetite for greasy food is greatly reduced, and the taste tends to be light. As a result, people will consume fewer calories.