This is a constant theme on this show of how young a lot of nutrition science is. What i wanted to do to day is just like dig into a few of those corps assumptions that we were talking about earlier, rit. And i wanted to start by dig in on calories in, calories out, which is almost like a dieting mem at this point. Yes, my god, mike, tell me about your sort of thoughts and feelings about callories inn, calories out. I'm sure you've heard it until you're blue in the face. You know, i have a speel about callories ind, calloriese.