We posted at the exact same time! Isn’t that funny?!! ;)
Well, today I've had two hydrocodone for pain, and I misread your sentence. I saw it as, ...keeps the brain full of endorphins and sharpens the mind for the bodies ahead.” I thought why would we have bodies, then reread it.
I've read FR most of the day, so who knows how much of it I misread. I just double checked - I am on FR, that much I know is true.