There are many reasons for the rebound after losing weight, one of which is that fat cells are the masters of memory and absorption. Fat cells have a memory ability of 5 years. After losing weight successfully, you must maintain your current diet, exercise and other living habits for more than 5 years. When fat cells adapt to your new living habits and know that you are not threatened by hunger, they will completely erase their original memories, stop trying to absorb them and lose weight. Dieting and meal replacement only make fat cells unable to eat and starve to death, but this cannot erase the original memory of fat cells.

In addition, if an unhealthy way to lose weight is adopted, the body will break down the muscles in the body to get the energy it needs because of insufficient nutrient intake and calorie intake. As muscles gradually decrease, basal metabolism will also decrease.