OK, I have to admit, this one has me stumped! I can contribute that when you're stressed, the blood should flow to your extremities, and maybe for low cortisol folks the opposite is the natural state.
Yeah, I have craved baths in the am since I was a kid; it just seems a gentler way to start the day than a shower. And with Epsom Salts it's a solid way to get magneisum into play.