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:
“I look on that man as happy, who, when there is question of success, looks into his work for a reply, not into the market, not into opinion, not into patronage.”
—Ralph Waldo Emerson (1803–1882)
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