You think you're being smart by eating less during the week to "save room" for the weekend. But this strategy — called calorie banking — may actually be training your body to store more fat over time. In this video, Cori breaks down the concept of collateral fattening: why extreme weekday deficits cause muscle loss, slow your metabolism, and amplify hunger cues — so that by the time the weekend hits, you're eating in a much bigger surplus than you realize. And why this cycle gets worse with e...