Before I get into the specific types of workouts that qualify as MRT, let me tell you a little bit about why these workouts are so effective.For quite a long time now, health and fitness researchers have been preaching that strength training is an important component in a weight loss program. But over the past several years, with the advent of commercial programs like P90X, Insanity, CrossFit and others, strength training has evolved from something involving long hours of slow sets in the gym to something approaching what I would call balistic movement with resistance. And the truth is, both forms of strength training can be effective for weight loss (as well as for building muscle and gaining strength, obviously), but there is a problem with both of these types of workouts – they are not safe for the majority of the population, and not even for those who are quite fit.An old-school weight workout, which the fitness world has lately given the shiny new moniker “High-Intensity Resistance Training (HIRT)”, involves lifting very heavy weights for a few (6 or so) repetitions, resting for two or three minutes, then doing it again three or four more times before moving on to the next exercise. This type of training creates major metabolic changes in the body (especially the muscles and the systems servicing those muscles), but it is A) very time-consuming and B) very hard on the joints of anyone over the age of 30, regardless of how fit or strong they are

Taken from:

Metabolic Resistance Training – Part II | MNFitnessBlogger

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