H.I.T., which is an acronym for High Intensity Training, is characterized by a low volume approach of total sets per workout and brief, intense, infrequent workouts for adequate muscle recovery. HIT workouts became popular in the 1970’s through the research of Arthur Jones and developed further by others who simply added their own scientific studies to an already effective weight lifting program.
The modus operandi of the muscular system is to function as a defense mechanism in a threat/response relationship to exercise. A muscle perceives a threat due to the burden of the weight as it is exercised to failure. It is momentarily weakened and therefore adapts to the demands of the burden by multiplying muscle fibers previously weakened. The muscle strengthens because it assumes it will encounter the same burden again and must therefore conquer the threat. A minimal amount of work out sets are required to provide adequate stimulation. An inadequate recovery period, such as a high volume approach, only prolongs the recovery cycle and leaves the muscle in its weakened state. When progress is not recognized on a weekly basis then what follows is an unrecovered muscle from its previous workout.
The following are important reminders of High Intensity Training: