Metabolism
Metabolic reactions may be categorized as catabolic – the breaking down of compounds (for example, of glucose to pyruvate by cellular respiration); or anabolic – the building up (synthesis) of compounds (such as proteins, carbohydrates, lipids, and nucleic acids). Usually, catabolism releases energy, and anabolism consumes energy. [Metabolism]

See Also

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breath
breath of death
breath of God
breath of life
breathe
Breathing
heart beat
heartbeat
inbreathing
inbreathing-outbreathing sequence
outbreathing
respiration