When beginning a book on physical training, I feel it is only natural to begin with the most basic concept used in any barbell endeavor. We all use this training aid in one form or another and its use makes possible the goals of which our dreams are made.
By single and double progression I mean the basic way we arrange our sets and repetitions with a given weight, which will enable us to do so many things in our training, that its usefulness cannot and should not be overlooked when discussing barbell training, in general.
All trainees use this method for keeping track of their progress as well as preventing injury and over-training. In fact, I would go as far as to say that most of today’s problems concerning progress with the weights stem from a mistaken notion of the use of this single, double and even triple progression system and all it pertains to.