This is still recommended to lose fat first. After losing fat, see if you focus on improving strength training or building muscles. I don't need to say how to exercise. You can go online to see what training is available, or download Keep. Personally, I suggest that in addition to training, you can supplement protein powder (this suggestion is to go to a physical store, such as PQfitness). It is not enough to strengthen fitness by diet alone. In short, if you don't lose weight and pay attention to exercise strength, it may not look good.