The bottom line is you've got to get out of your comfort zone, get your body out of its comfort zone—hormesis is what we call it. The problem with today's world is... we just want to be relaxed; we just want to be fed. We don't want to feel discomfort, and that's leading to a whole bunch of problems. If we're not always telling our body things could be problematic, our bodies don't care—they don't fight against disease; they don't fight against aging.