Being that I am already working out,I was told by an ex-bodybuilder that If I
flexed each major muscle(tri’s,pecs,etc.) for 15 seconds, with twenty second rest periods, for the duration of 15 min. definition would begin to show by the 4th week. How ripped could I get by doing this? How effective is it? and what are the limitations and/or benefits? Have you even heard of this? Thank you very much.
Mark (197 lbs. 5’11 1/2)- an ectomorph