Dynamic tension

The Epic Muscle Building and Strength Gain method used by Charles Atlas and Talked about in Harry Wong`s book "Dynamic Strength".By tensing your muscles and making them oppose each other you are able to gain strength through self-resistance.The hard you tense the better your muscles will improve.

Did some dynamic tension instead of going to the gym

Harry wong`s book Dynamic Strength well help you gain strength like someone Stink when covered in dog crap