Even in a regular gym, members may encounter black private trainers who pretend to be professional private trainers in the gym. In this regard, professional private education especially reminds several methods to distinguish between true and false private education: 1. Professional certificates of private education include IPTA private education certificate, Asian physical fitness certificate, Australian physical fitness certificate, 3F Physical Education Institute private education certificate and Wade system coach certificate. For example, Li's personal coaches are all trained by the Institute of Physical Education. 2. Look at the body shape and face shape. The personal trainer's ability can be seen from his symmetry, bodybuilding and healthy skin. If a coach lacks muscle and body shape, even if he speaks eloquently, he may not have professional experience. 3. Ask more questions to test the level and patience of private education. Members can ask more questions to private tutors, judge whether they have rich teaching experience, professional private tutors' knowledge and business ability from their answers, and understand their service level from each other's attitude. 4. See if the fitness program is personalized enough. A real private tutor, like a doctor, first asks about the physical condition of his parishioners, so that he can listen carefully to the explanations of the private tutor and judge whether the private tutor is good at prescribing exercise according to the physical quality of the parishioners. Hiring a professional personal trainer not only means paying for better fitness service, but also helps to carry out more targeted exercise and achieve fitness goals as soon as possible.