I've been ending showers with 2 minutes of the shower on COLD only. Pretty zesty, I gotta say, and I make sure to get the cold all over. Really get a "gasp" and shiver reflex going. I've especially enjoyed adding the cold rinse after a fasted state intense workout.
Can't imagine this is bad for me at all, but don't really know that there are true fitness/health benefits to it. Anyone got any input or experience with this? Perhaps with primal eating, exercise, sleep, healthy natural fat intake and Vitamin D (sun and supplements), and a touch of cold shock will ward off the N1H1 Flu virus for me! HAH!