The 35 hundred number is always invoked in these conversations. Yes, switch from pole milk to skim milk and right where you know it, you will have dropped three pounds without even thinking about it or whatever. So he determines that each pound of human fat tissue, human adapose tissue, has what he calls the caloric equivalent of 35 hundred calories. But years later, there's this very influential medical text book called modern nutrition in health and disease. And it takes up this wishnowskys rule and writes that losing one pound would require an energy deficit of 35 hundred calorie rate.