Here's my take on it. Since HGH and insulin aren't present together in the body naturally, it makes sense that cool things can happen if you inject them both at the same time. This is where that synergistic effect really happens in my opinion. What I do when I'm on a slin run is take half my HGH in the am on an empty stomach. Then I train and take the other half of my daily HGH dose post workout, along with my insulin. Now I've got insulin AND HGH running through me at the same time, which is completely unnatural. We're looking for unnatural results arent' we!??? LOL. Now, I'm really quite new to taking HGH so my basis for this is off scientific evidence and feedback from experienced users, along with my almost three months of HGH use. I used this method on my most recent insulin bulking phase and I ended up with a net muscular gain of 12 lbs in eight weeks and I put on such little fat that it only took me two weeks to lose the fat that I gained in those 8 weeks.

P.S. As was suggested below, BeyondImports is a guy to get great info from on HGH and slin. He's got tons of experience with both, and he's a beast, lol.

Hgh on empty stomach as you wake up, slin post workout.