Once enrolled at the gym, a typical boy will invariably be taken under the wing of one of the resident "personal trainers", usually a guy in his twenties, with the kind of muscular physique sported by the models in men's "health" magazines. The trainer prescribes the boy a punishing exercise regime, telling him it will make him "stronger". After a few weeks, when the endorphins have well and truly kicked in, giving the boy an addictive high, the trainer asks him if he'd like to be shown how to make his workout even more effective. After receiving the inevitable resounding "yes", the trainer will offer to sell the boy protein shakes, energy drinks, or, in the worst cases, anabolic steroids.