What does that mean? Well, the Glycaemic Index measures the speed at which foods are broken down by the body to form glucose - a source of energy. The lower the GI score, the longer you'll be supplied with 'slow release energy', so you're less likely to reach for sugary snacks. High GI scores mean you get a massive surge of energy, only to crash a few minutes later.
By evening out our blood glucose levels it is possible to satisfy our hunger and avoid the crash-and-burn effect of junk food highs.
Here are ten foods that will provide you with a steady flow of energy as well as satisfying protein, fibre and essential nutrients...
10 FOODS TO MAKE YOU FEEL FULLER FOR LONGER
HEALTHY BREAKFAST: BLUEBERRY BIRCHER MUESLI RECIPE
GET FIT FOR FESTIVAL SEASON
MORE HEALTHY EATING ADVICE