The energy balance equation is physics — it must be true. But it’s incomplete because “calories in” and “calories out” aren’t independent variables. Research by Hall shows eating less causes the body to burn less; the equation balances, but not in your favor. What you eat affects how hungry you feel and how many calories you burn. Simply eating less has a 95+ percent failure rate.
This companion covers why the equation is true, why it’s incomplete, and what actually works. (3 min read)