I haven't exercised for a long time. Recently, I started to jump about 50 times a day, and my movements should be standard.

On the one hand, we can't just look at weighing scale, because some people will lose weight visually after gaining muscle and losing fat, but the weight of the same volume of muscle is greater than the weight of fat, and they may gain weight. In this case, it is better to look at body fat than just weight. On the other hand, it is also possible that there is no reasonable control of diet structure during exercise to lose weight, resulting in no calorie gap and no slimming down.