adrenaline

Every bodybuilder knows that cortisol is bad. Cortisol is one of those nasty catabolic hormones, and catabolism is bad.

At least that’s the logic. Cortisol is a hormone found in your body, in a class of compound called glucocorticoids. It gets its name from the fact that it’s produced in the cortex (outer layer) of the adrenal glands.