There are a lot of people who would give a lot to increase their metabolism. Having a high level of metabolism enables one to maintain burn fat and lose weight fast with the least amount of activity. Metabolism is the rate by which the body produces and consumes energy and calories to support life.
There are several factors that affect the metabolism of a person, such as the amount of muscle tissue, the frequency of the meals one consumes, genetics, stress levels, personal diet and activity levels. Metabolism slows done due to the following: loss of muscle because of not enough physical activity, the tendency of the body to cannibalize its own tissue because there is not enough food energy to sustain it, and the decrease of physical activity that comes naturally with old age.