Hi again, can someone please explain why some peptides and supplements boost cortisol levels? Is this bad? I know that we need cortisol and that it has some function with joints. I always heard of people taking cortisone injections and have even heard of the horror stories of how cortisone shots have completely whipped peoples immune systems out. Hexarelin supposedly is a powerful ghrh but it says that it may raise cortisol levels. Is this a negative side effect? What is optimal (or close to it) cortisol levels especially for some one who pedals lots? Any education about this topic will help me better understand my body.