Christopher called us all a bunch of geese...so lazy we will take the path of least resistance. We enjpy comfort and eze, but the human body was designed to live in the wilds, feeling the environment and if the human body is not used, it does, about that simple. The author I am doing many of his books this year, was an expert with this. He explained like so many others have, any thing within the human body that you don't use regularly? IT WILL DIE AND DRY UP, even though you continue to live.
Medical knows that a Breathairian had 100+ more glands secreting hormoned/chemicals than a civilized human does, simple because they "USE" them, while the civilized human has LOST their use. Nothing more complicated than that and explains the 7 generation theory that leads to humans being sterile. You have 6 preveious lazy raltives in your past, don't surprized you will be the last.