Hypertrophy-specific Training

Hypertrophy-Specific Training (HST) is a method of strength training intended to induce the fastest muscle growth, or hypertrophy, possible, without losing efficacy over an extended period of time, and without the use of anabolic steroids. The method was popularized following an October 2000 ThinkMuscle newsletter article by fitness writer Bryan Haycock, which discussed methods he and his clients had been using for several years. Haycock says that the training method arose out of "physiological principles of hypertrophy discovered in the laboratory," and that these principles were then organized into a weight training method meant to induce hypertrophy.