Merriam-Webster’s dictionary defines the following two words as such: In•ten•si•ty: 1: the quality or state of being intense; especially: extreme degree of strength, force, energy, or feeling 2: the magnitude of a quantity (as force or energy) per unit (as of area, charge, mass, or time) In•tense: 1 a: existing in an extreme degree <the excitement was intense> <intense pain> b: having or showing a characteristic in extreme degree <intense colors> 2: marked by or expressive of great zeal, energy, determination, or concentration <intense effort> 3 a: exhibiting strong feeling or earnestness of purpose <an intense student> b: deeply felt Now, for many years there has been a need by some to define high intensity training, better known as “H.I.T.” When definitions are offered, then there is an added need to re-define, clarify, explain and on and on. So, why is there so much confusion? It seems there are camps in the strength training world that are defined as HIT or non HIT. It’s “Us and Them”, “Them or Us”, why isn’t it just strength training? Well, I’ll tell you why. For the last few month’s I have been reading every certification groups strength and conditioning manuals that I can get my hands on and most of these are “non HIT”. The funny thing is that most of these certification courses and manuals don’t even agree with each other and one even attacks high intensity training in their certification manual. The truth as I see it with high intensity training is that it evolves. Arthur Jones got the ball rolling when he came up with the “Nautilus Principals.” In his writing he often mentioned “high intensity training” or training with a high intensity. The “Nautilus Principles” were guidelines for sensible and safe training. To read more click here! Thanks bodybuilding.com!