The metabolic rate of each person is unique and depends on several factors.

Age. Usually, the amount of muscle tissue tends to decrease with age, while fat tissue tends to increase, so the process of burning calories slows down. For most people, metabolism steadily slows after age 40.
Gender. Most often, men burn more calories than women of a similar age and weight, because the male body has less fat tissue and more muscle.
Body composition. Usually, people who are larger tend to burn more calories even while resting. At the same time, muscle tissue burns more kilojoules than fat tissue.
Physical activity. It may not necessarily be working out, but any movement, whether it’s walking to the store or fidgeting in a chair.
Food digestion. The body uses energy to digest, absorb, and transport nutrients. The more often we eat, the more energy we use.
Genetic predisposition. The metabolic rate partly depends on your genes.
Environmental temperature. If it’s low, the body tends to spend more energy maintaining its temperature.

Comments to article «A Simple Definition of Metabolism, and How to Boost It»