$ 0 0 Is anybody here doing/has done it? Opinions?http://www.healthylivingheavylifting.com/the-every-mans-guide-to-dup/http://www.sportsnutritionsociety.org/ArchivePDFS/ArchivePDFS-267.pdf http://www.scribd.com/doc/213559650/Interview-with-Dr-Mike-Zourdos...