Exploring the complex realm of biological optimization , we'll Sermorelin, ARA-290, GHRP-2, and MOD GRF – the popular hormone stack . Sermorelin acts as an GHRH agonist , whereas ARA-290 operates like the secretagogue – prompting growth hormone release . GHRP-2 also promotes growth hormone via the ghrelin -like process , and MOD GRF represents