The old saying goes ‘an apple a day keeps the doctor away’ and this is true in more ways that one. Not only are apples one of your recommended five a day fruit and vegetables but they are also a proven metabolism boosting food that can be eaten as part of a metabolism diet. What this means is that apples actually assist the body in burning calories as it is one of a whole host of foods that the body has to work that little bit harder on in order to break it down. This may seem a little crazy that you are eating to burn calories but it is actually quite true. This makes apples twice as good for you serving this dual purpose for the body. Apples are very flexible too in that they can be eaten at any meal time and can be combined with a great many other foods as well as being eaten on their own.