In a nutshell, all fibers are involved in a set, but specific ones are emphasized for the duration... Learn more about these 3 tips and how they can help with muscle gain: Explosive pre-sets, Negatives, & Spot-Accretion.
http://www.bodybuilding.com/fun/ivan4.htm
HOW TO REVIEW: Post Your Review Of This Article - CLICK ON POST REPLY BELOW! You do NOT need to be a registered member to post a reply in this section!