According to the Mayo Clinic, metabolism is the process by which your body converts what you eat and drink into energy. During this complex process, calories in food and beverages are combined with oxygen to release the energy your body needs to function.
Although metabolism is inextricably linked to weight, calorie consumption and physical activity are the primary determinants of weight gain or loss. However, a speedy metabolism allows your body to process the food you consume more quickly and efficiently.
This infographic from SkinnyMom gives us a few pointers on how to speed up our metabolism.