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You swallow your last bite of lunch and head back to your desk. A stack of papers awaits you, and you’re just easing into work mode when suddenly you’re ambushed by a sudden, inexplicable hankering for potato chips. Every trace of productivity vanishes from your mind, replaced by an inexplicable fixation on that crisp, salty snack. But you just ate … you can’t be hungry already, right?

For decades, the popular narrative of “the wisdom of the body” held th