(a) "Health spa" means an establishment that provides for profit as one of its primary purposes, services or facilities which purport to improve the user's physical condition or appearance through weight control, exercise, dieting or a combination of these. The term includes, but is not limited to, establishments referred to by such terms as reducing salon, spa, exercise club, exercise gym, health studio, health club, weight control center or other similar terms. The term "health spa" shall not include the following:
(i) Bona fide nonprofit organizations, including but not limited to the Young Men's Christian Association, Young Women's Christian Association or similar organizations whose functions as health spas are only incidental to the overall functions and purposes;(ii) Any organization primarily operated for the purpose of teaching a particular form of self-defense such as judo or karate;(iii) Any nonprofit public or private school, college or university; or(iv) Any organization, business, establishment or person which does not offer a contract with a duration in excess of four (4) months.