Ind. Code § 24-5-7-1
As used in this chapter:
"Business day" means a day other than Sunday or a legal holiday.
"Buyer" means a purchaser of services under a contract for health spa services.
"Contract" means a contract for health spa services entered into after August 31, 1983. The term includes all financial agreements provided or arranged by the health spa or the health spa's affiliates.
"Health spa" means any business entity, other than an entity that is exempt from taxation under Section 501 of the Internal Revenue Code, offering health spa services to the public.
"Health spa services" means instruction, training, or assistance in physical culture, bodybuilding, exercising, reducing, figure development, or any other health spa service, for the use of the facilities of a health spa, figure salon, weight loss clinic, gymnasium, or other facility used for the delivery of health spa services, or for membership in any group, club, association, or organization formed to deliver health spa services.
"Seller" means a seller of services under a contract for health spa services.
IC 24-5-7-1