
Originally Posted by
timtim
flies are the main mass builder for chest because its practically an isolation movement which you can go very heavy on. pressing movements stimulate the shoulders, tris, and back alot. also, look at the way the muscle contracts. charles poliquin makes great points about this in his book poliquin principles where he talks about the shape of the muscle and the manner in which it contracts. pressing movements do not mimic the way the pec muscle contracts from insertion to insertion whereas fly movements are nearly identical. check out the literature. i think his web page is elite fitness systems (not elite fitness the aas board). his theories are very sound and all backed by scientific research. check it out.