Boost your Metabolism to Lose Weight Manisha Sharma August 21, 2012 Nutrition & Fitness Articles and videos pertaining to weight-loss and diets often refer to dieting methods, low-calorie foods and exercise regimens. But no one really talks about metabolism, metabolic rates and their connection with losing weight or at least to keeping it in check. Metabolism refers to the physical and chemical processes that happen naturally in our bodies in order to sustain life like breathing, tissue repair, digestion, the beating of the heart, thinking, laughing or really any sort of activity.