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:

    After decades of unappreciated drudgery, American women just don’t do housework any more—that is, beyond the minimum that is required in order to clear a path from the bedroom to the front door so they can get off to work in the mourning.
    Barbara Ehrenreich (20th century)