For anyone interested, there is a type of tumour/ cancer called a phaeochromocytoma (cool word!) that arises from adrenal tissue and produces adrenaline. People diagnosed with phaeochromocytoma ALWAYS have adrenalin levels that are too high and as such suffer some pretty anoying side effects such as anxiety, weight loss and a really rapid heart rate (but no super strength). Thankfully it's a treatable tumour with a good prognosis!
@bachuslib I think what you're saying is interesting, but perhaps Wim HoF had another method? Adrenalin is a really good vasoconstrictor and as such would shut down peripheral circulation... the problem is over an extended period of time that tissue would die, and it wouldn't buy enough time to climb Everest. I looked this guy up and he tried to but never succeeded in climbing Everest but he does do some crazy stuff!
@kaykunoichi it's interesting you mention the pituitary gland because it's (in essance) responsible for the control of most of our endocrine hormones. Adrenaline is not produced in the pituitary itself, but the production of adrenaline is stimulated by two hormones that ARE produced in the pituitary (CRH and ACTH). The adrenals don't only make adrenalin though. It also produces cortisol to help us control our base metabolic rate, aldosterone to control our blood pressure and some sex hormones which are vital in deciding our sex during development, but don't play a huge role in the adult body. When people suffer from adrenal fatigue they don't produce enough of any of these hormones, which is what makes it such a shitty condition to treat :(