From a health point of view, whether you exercise or not, you should try to eat less dinner. Breakfast and lunch must be eaten. Strength has nothing to do with being fat or not. Fat refers to the accumulation of unused heat in the body to form fat. But strength is energy contained in muscle fibers. 180, weighing 60, thin. It should be about 70 kilograms now. You should eat more food and vegetables rich in protein. After strengthening muscle exercise, muscles will grow slowly. Fitness is a boring and long process, you can't rush for success, you should persevere.