Yes, fruit on its own is good for you, but a 32-ounce smoothie can pack as many as 700 calories with fewer than two grams of protein, thanks to the high sugar content. That's like eating a whole pineapple, entire mango, and one cup each of blueberries and strawberries in a single sitting. Why is that bad? Calories from any food get stored away in your fat cells if you eat more than you can burn.
