Kiwifruit
Low in calories, kiwifruit packs plenty of tropical goodness in a small package. One average-size kiwifruit serves up your daily quota of vitamin C. According to a report in the Journal of the American College of Nutrition, vitamin C may increase fat burning during exercise.

Remmer says that kiwifruit is also full of soluble fibre. "It keeps you fuller longer and helps to keep your blood sugar stable," she says. "You’re less likely to binge on sugary or calorie-dense foods when your blood sugar is steady."