50 of Our All-Time Favorite Smoothie Recipes

Not only will the caffeine in the green tea give you much-needed energy, but cinnamon and green tea have also both been shown to have metabolism-boosting properties. In addition, research has shown that honey may help regulate blood sugar levels, meaning you won't feel groggy after this afternoon snack. The next time you're feeling like you could use a frosty, sweet caffeinated beverage, forgo the Frappuccino for this 139-calorie green tea smoothie instead.