In the process of losing weight, most people will focus on controlling calories, often ignoring the most important nutritional intake.
In the early days of losing weight, it really started with reducing calories. Simply calculating calories will indeed reduce fat in the short term, but healthy and effective fat reduction pays more attention to long-term effects. It is difficult to really lose weight simply by controlling calories, and it is easy to rebound.
Because you may have lost protein and muscles, but what you really need to lose weight is fat, so although you lost weight, you didn't lose weight at all. So even if you calculate the calories accurately, it doesn't mean you will definitely lose weight.
If you eat a balanced diet and let your body take in enough nutrients, your body will become energetic, less tired and consume more energy. Through this virtuous circle, the body will naturally lose weight, become healthier and less likely to rebound.