The certificates issued by different institutions are different, and the test difficulty is also different. The national certificate of fitness instructor is issued by the State Sports General Administration with the national emblem printed on it, while the CBBA certificate is issued by China Bodybuilding Association, a subordinate unit of the State Sports General Administration, so the gold content is not as good as the national certificate, and the examination is not as difficult as the national certificate. As long as CBBA learns, it will surely pass the exam.