Your body isn’t designed to handle food the same way at night as it does during the day. As evening hits, your cells become more insulin resistant—meaning your body has a harder time processing sugar and nutrients.  That leads to higher blood sugar, more insulin, and one big problem: your fat-burning switches off. Elevated insulin blocks your ability to burn fat, especially during sleep—when your body is meant to be tapping into fat stores for fuel.  Want better sleep and a leaner body? Close the kitchen early.