This is divided into gyms and places according to the situation. Generally speaking, in gymnasiums with good grades, coaches usually count by class hours. One class is about 150-200, and there is nothing else. If you hire a personal trainer at home, the cost will be more expensive. In fact, there is no need to ask a coach to lose weight and fat in order to exercise yourself. Aerobic exercise as the center, running, skipping, swimming, cycling can be done, and the amount of exercise each time is about 30 minutes to 10 hour. If the goal is to build muscles, you can consider looking for a personal trainer, but if there is a way, go online and find a personal exercise plan. After all, people's constitutions are different, so planning is unnecessary and you can practice by yourself.