Stick to fitness, eat more fruits and vegetables on time, go to bed early and get up early to do weight-loss exercises at 4-5 o'clock. It mainly depends on what the purpose of fitness is. If it's just for fitness, you don't have to take private lessons. If it is to build muscle, reduce fat and shape, then please teach privately. If you want to be a fitness instructor, you can go to a fitness training institution to study and get a national fitness certificate. Many people don't know how to choose a training institution. Generally, it can be selected according to the teaching environment, teaching staff, teaching scale and courses of the training institution. Good training institutions have a good reputation.