A person is guilty of an offense when, in the course of another person’s initiation into or affiliation with any organization, the person willfully engages in conduct that creates a substantial risk of physical injury to that other person or a third person. As used in this section, “conduct” means any treatment or forced physical activity that is likely to adversely affect the physical health or safety of that other person or a third person, or which subjects that other person or third person to extreme mental stress, and may include extended deprivation of sleep or rest or extended isolation, whipping, beating, branding, forced calisthenics, overexposure to the weather, and forced consumption of any food, liquor, beverage, drug, or other substance. The offense is a class A misdemeanor if the actor’s conduct causes physical injury, otherwise the offense is a class B misdemeanor.