This is how I spike my insulin and keep my cortisol levels low, pre workout= carbs+sugar+amino+creatine+gluta, I keep it spiked all through my workout by sipping on a similar mix except i make sure it either contains sucralose or maltodextrin and protein at least 5-15g (look up Xtend it contains everything essential for intra except protein),post workout right away I drink 30-50g protein shake,40-50g carbs,5g creatine,5g gluta,aminos
This is how i keep myself at peak during training, during the growth phase carbs are crucial to keep insulin levels spiked, about 1g of carbs per 5-8g of protein, hopes this helps