> I wonder what changes in the body with repeated exposure, and why we haven’t evolved to do it naturally?
I can’t speak to the specifics, but generally speaking the body will try to maintain homeostasis. A stressor that disrupts homeostasis leads to adaptation or illness and death. Presumably those adaptations are not metabolically free, so the body prefers not to make them in the absence of stress.
I can’t speak to the specifics, but generally speaking the body will try to maintain homeostasis. A stressor that disrupts homeostasis leads to adaptation or illness and death. Presumably those adaptations are not metabolically free, so the body prefers not to make them in the absence of stress.