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Celsius Functional Essential Energy Drink ($20)

"These drinks keep me going on long and busy days," Marjan says of the popular energy drink brand. "I'm honestly obsessed." This 12-pack variety comes in some of the most popular flavors. Celsius is kosher, vegan, and gluten-free — just watch out if you're sensitive to caffeine, and definitely don't exceed more than one serving a day, especially if you're also a coffee drinker.