[quote=@Legend] We don't directly perceive those kinds of things; they're values to us. So it's like pain? [/quote] Hmm. Well, that’s the best way I can describe it. Imagine a feeling of relative strength or weakness being related to those values. The more you eat, the higher the numbers, and if it gets too high or too low, it causes you to feel pain or discomfort until it’s corrected. The more extremely it deviates from that happy medium, the worse you feel.