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:

    Success and failure in our own national economy will hang upon the degree to which we are able to work with races and nations whose social order and whose behavior and attitudes are strange to us.
    Ruth Benedict (1887–1948)