15 Foods That Will Boost Your Metabolism. Definitely Love # 2 And 15! February 10, 2017July 6, 2014 by Nelly HelpĀ lose weight. Loaded with fiber, grapefruits keep you full longer. In addition, they stabilize blood sugar, which means that your body can more efficiently use food for energy rather than storing it as fat. Photo: Credit Prev1 of 15Next