Energy Systems - How They Work

How They Work

Aerobic and anaerobic systems usually work concurrently. When describing activity it is not which energy system is working but which predominates.

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Famous quotes containing the word work:

    Let’s holler and ask him if he won’t prescribe
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    From all this wagery. But what’s the use
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    That class of people don’t know what work is....
    Robert Frost (1874–1963)