Even though fruit contains sugar, it is a better option for someone with a sweet tooth. Sure you may feel the urge to eat more and more fruit at first, but it goes away with time. Fruit is healthy as it comes in just a single serving size. When you chew it, your brain releases some hormones that make you feel full. Fruit also contains fibre which is known to make you feel fuller for longer. Eat more citrus fruits like oranges, lemons, tangerines, kiwi and fresh lime to help you burn even more fat around your belly. Others like apples, watermelons, grapes and strawberries will boost your metabolism.