High blood sugar is much more than just a number your doctor tells you. In short, it means that energy from food you eat isn't feeding your cells, but staying locked up in your bloodstream instead. Others may experience sitting at their desk mid to late afternoon when it hits — exhaustion with a headache on the side. As you shakily punch in an Uber Eats order, you kick yourself for leaving the emergency snack on the kitchen counter. What’s the deal? You’re probably experiencing hypogly...