The Anabolic reference article from the English Wikipedia on 24-Apr-2004
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Anabolic

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Anabolic is a biochemical term describing something that affects anabolism, or the combining of cell structures.

The anabolic phase of metabolism is the one in which simple substances are synthesized into the complex materials of living tissue. The other phase of metabolism, the catabolic phase, is the one in which the complex molecules of life are broken down into simpler ones, often resulting in a release of energy.

Sleep is a fundamentally anabolic state while being awake is a fundamentally catabolic state.