listen, first off insulin can and will kill you if you treat it like gear.with that being said i have taken large and i mean LARGE amounts of gear and always wondered why i didnt look like a pro or anywhere near their level(245 at 5'10). so i decided to add gh to my stacks and well,i liked it, put on 15 extra pounds, but it wasnt my answer to the next level.so i decided to come off my truck load of gear and start back up with 2cc of cyp with gh and insulin(last cycle was 6cc cyp/wk,3cc deca(300mg)/wk,3cc eq/wk,100mg/day d-bol,100mg/day anadrol).now on my new cycle, let me just say,WTF!!!!!!! i was gaining anywhere from 2-4 pounds a day while losing fat(also had t3 in there) on just 2cc of cyp a week. i am back to my original weight within 1 month and on a quarter of the amount of gear i was on before.think i found my answer to why the pros are so far ahead. but again insulin will kill you, i was scared as hell the day i took my first shot of insulin, you must know your body and be serious about this game.just my thoughts and experience