"Calories in calories out." Yes, hooray we've restated the 1st law of thermodynamics, because it's never wrong, and you can never be called out for saying somet

"Calories in calories out." Yes, hooray we've restated the 1st law of thermodynamics, because it's never wrong, and you can never be called out for saying something incorrect when you trot out that phrase. But it's also about as relevant to effective nutrition as it is to the current price of soybeans.