The first category: national certificate. Among the certificates issued by national institutions, the national certificate recognized by gyms is unique, especially the "national post" certificate. "National post" is arranged by the State Sports General Administration for training and assessment. The training time is 7 days and the assessment time is 2 days. The full name is "National Professional Qualification Certificate of Fitness Coach", which is divided into four levels: primary, intermediate, advanced and coach. Category II: Certificates issued by some private fitness instructor training institutions and non-authoritative fitness instructor associations. For example, the certificates of Beijing Bodybuilding Association, Shanghai Bodybuilding Association and China Bodybuilding Association are equivalent to the certificate of completion, which means that you are a foreign certificate with certain professional ability after systematic study. Examination of fitness instructors requires professional fitness skills and theoretical knowledge.