Thought you guys would dig this. There are a substantial percentage of folks who simply do not gain appreciable size (as well as those who don't adapt in other ways to exercise training). The question is why (and what can be done about it). Here's a podcast interview I recently did on the topic http://www.chrisdufey.com/36-muscle-growth-exploded-with-scott-stevenson/ And part 1 of a 2 part article on the topic we discussed in the podcast. http://www.elitefts.com/education/training/bodybuilding/kiss-keep-it-simple-science/ -Scott