Metabolism and weight loss: How you burn calories ! Find out how metabolism affects weight, the truth behind slow metabolism and how to burn more calories. source You've probably heard people blame their weight on a slow metabolism, but what does that mean? Is metabolism really the culprit? And if so, is it possible to rev up your metabolism to burn more calories? It's true that metabolism is linked to weight. But contrary to common belief, a slow metabolism is rarely the cause of excess weight gain. Although your metabolism influences your body's basic energy needs, how much you eat and drink along with how much physical activity you get are the things that ultimately determine your weight. Metabolism: Converting food into energy Metabolism is the process by which your body converts what you eat and drink into ...