There has always been a way to lose weight by replacing meals with fruits, and the principle is the same. In fact, the main loss of weight loss in three days is water. A medium-sized apple is about 2 10/0g, and the edible part is about160th. If you eat eight apples a day, the total energy intake is about 640 calories. However, an adult needs about 1800 calories a day, and the negative energy balance after eating apples for three days is about 3480 calories. In other words, the actual consumption of body fat is less than 500 grams. The three-day weight loss is mainly to reduce water and some muscle tissue in the body.
One of the reasons for obesity is improper weight loss: an extremely low-calorie diet will slow down the metabolism in the body. Apple's diet of 640 calories a day for three days is a very low-calorie diet, which will lead to a decrease in thyroid hormone secretion and a slow metabolism in the long run. When returning to the original diet, the weight not only bounces back to the original weight, but is even heavier than the original.
The really reliable way to lose weight still depends on controlling calorie intake, especially the calories at dinner, and strengthening exercise. Instead of eating only apples for three days, it is better to eat only apples for dinner, and eat normally for breakfast and lunch, because the time from dinner to bedtime is relatively short, and the calorie demand is less, and the excess calories will be converted into fat and stored in the body. Eat less dinner and take a walk after dinner. This method is easy to adhere to, and it can also achieve the effect of losing weight, and it will not harm health.