In reply to OneLifeOneHeart:
stretching is controversial. some say it doesnt do shit, others say its the best thing ever. still others say its gotta be done first (cool down is other stuff) etc.
but, seems fairly agreed upon that its gotta be done when warm, without 'bouncing', gently and in synch with your breathing.
personally i do it after a warm up, before the bulk of the session, with light weight (after i do a cool down thats easy cardio). sometimes for shoulders etc i do short stretches throughout the session too.
my thinking is its injury prevention where it matters, so a bit useless when done last, other than feeling nice.