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Metabolism is a series of biochemical reactions that influences the storage and conversion of fuel molecules into energy. It is a set of chemical reactions that maintain the living condition of organism and cells. Metabolism can be subdivided into 2 categories:

Anabolism-this is the synthesis of compounds needed by cells

Catabolism-this is the process where molecules are broken down into energy.

Metabolism is directly related to nutrition and the presence of vital nutrients in the body. Biogenetics is a phrase describing the metabolic and biochemical pathways through which cells eventually obtain energy

Formation of energy is one vital component of metabolism. There are several factors influence metabolism including:

Weight-Different body tissues contribute varying amounts to metabolic rate. Muscles contribute more per unit mass than fat because muscle is denser than fat.

Heredity-A person can inherit his metabolic rate from past generations

Age– The rate of metabolism is said to decrease with 5% every decade, after 40years. This is partially due to reduced muscle mass.

Gender-Generally, men burn calories quickly as compared to women because they have more muscle tissues

Thyroid dysfunction -Hypothyroidism and hyperthyroidism can speed up or slow down metabolism.

When the main energy source glucose runs down metabolism process converts body fats into energy. On the other hand, when blood sugar supply increases, metabolism process stores extra energy by converting it into fat. The RMR and BMR calculator uses age, sex, weight and height to estimate the Resting Metabolic Rate (RMR). It represents the minimum level of energy necessary for proper body functioning including normal body temperature, heart beating and respiratory functions.