“If your blood sugar isn't well regulated after consuming a carbohydrate-rich meal, snack, or sugary drink, you may experience post-prandial fatigue, mood swings, and even more cravings,” Crouch says. “This happens because your insulin response exceeds your baseline, causing your blood sugar to drop too low, leading to a craving for something sweet to raise your blood sugar. This can create a vicious cycle, leading to decreased insulin sensitivity.”