Sometimes you may be so focused on getting in your veggies, proteins, and complex carbs for the day that you forget about these guys. But berries are important when it comes to eating a balanced diet. They are an incredibly potent source of antioxidants, which help fight free radicals, slow down aging, and reduce your cancer risk. “Berries are always a healthy and refreshing snack, and they're an especially good choice when you’re craving something sweet," says Zuckerbrot. "High in fiber (averaging 4-8g per serving), these fruits are naturally filling. They make a smart addition to your morning cereal, post-workout smoothie, or yogurt."