First of all: if you want to grow muscles, you must exercise and persevere. If you take diet pills, you will go to the toilet frequently and your body will become weak. If the consumed nutrition is not supplemented at this time, it is likely to lead to dehydration, collapse and fainting.

Secondly, losing weight will not break down muscles, but will only reduce fat, but it will also eliminate water in the body, which will lead you to go to the toilet frequently. When you want to take in too much water, and the water discharged reaches 30% of your body, you will feel weak and other symptoms.

Therefore, exercise is not recommended to lose weight. If you want to lose fat and gain muscle, I suggest you try fitness supplements, such as whey protein and muscle gain powder, which are familiar to fitness athletes.