7. Citrus Fruits
Grapefruit as well as many other citrus fruits can significantly boost your metabolism and help you get in shape. They lower the level of insulin, regulate bowel movement since they have lots of fiber and provide you with vitamins.
8. Salmon
Oily fish like salmon is advised by most dietitians and nutritionists. This is one of the best sources of fatty acids that we need when we wish to have fast metabolism. Besides the fatty acids fish is rich in protein. You can also find plenty of other alternatives if salmon is too expensive for you. Other oily species of fish have similar properties.