I'm not sure why your asking about hgh "but not insulin" . my protocol has 30 iu of exogenous insulin mentioned.
that specific protocol is for mass and size. you want HGH, carbs/glucose, and insulin all together to help promote growth factors and increase hepatic output of IGF.
Growth is an energy dependent thing. glucose helps provide the 'fuel' needed to stimulate this growth.. HGH does not magically build and repair cells without utilizing energy. hgh and glucose metabolism are closely related (in a natural state you body pulses HGH and raises blood sugar at the same time.. which makes perfect sense because growth is again an energy dependent thing).
if your using HGH specifically for growth and size, you need to fuel that growth and thats where Carbs/glucose comes into play (plus exogenous insulin).
HGH for fat loss is a different thing and a different protocol and I do not recommend using HGH with a carb meal if your goal is fat loss





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