Not to put a damper on enthusiasum but a lot of these stories are exagerated. I think it's funny that there are guys who ponder insulin use when they've barely tapped their NATURAL ability.
And in the meantime, there's a very simple way to use the power of insulin safely. Sugar and vandyl sulfate. That's right -- the one thing everone tries to avoid and an old outdated supplement from the 90's. I challange everyone who is looking to get bigger with insulin to drink two portions of BIG BLAST along with 3 mcgs of vanadly a day for one month. I guarantee, if you train heavy, get enough sleep and maintain a calorie surplus you'll be 10 pounds heavier. Will some of it be fat and water? Absolutely. But so would be the case with insulin.
Sorry for the rant. Carry on.