There is no age limit for being a fitness instructor, but to participate in coaching training and obtain a national certificate, you need to meet the following conditions:

(1) The age is between 17-35 years old;

(2) The height 160cm for boys and 155cm for girls;

(3) The body has no sports injuries and infectious diseases;

(4) Junior high school education or above, with the ability of independent learning and understanding.