Step Away From the Energy Drink! Here Are 9 Healthy Snacks to Fuel You Up on Late Nights

"This fiber-rich snack has a low glycemic load, meaning it won't raise your blood sugar levels drastically after eating it," Charlotte told POPSUGAR. "Instead, glucose will be released slowly into the bloodstream over time, providing a more steady supply of energy." Popcorn is also versatile, said Madeline McDonough, MS, RDN. If you want a salty crunch, sprinkle on some sea salt or nutritional yeast, she said. Feel like sweets? Madeline recommended adding a sprinkle of cinnamon and a drizzle of raw honey.