2 gs test and one g tren. Big doses.
T3 also plays role. You reduce it and you got more anabolic. Muscles fulled up. If you continue eating though you might get a bit fat and water down the road.
GH also in the long run make you leaner. Maybe this is the reason you keep fat at bay while bulking.
All speculations though..
I've been on hgh for 8 months