The advantage of the lactic acid system among the options provided is produces energy quickly.
This energy system kicks in during high-intensity exercise when the demand for energy exceeds the supply from aerobic metabolism, allowing for rapid ATP production through the breakdown of glucose, although it leads to the accumulation of lactic acid in the muscles.
The other options are incorrect: the lactic acid system does deplete glycogen stores quickly, but this is more of a disadvantage; and it does not produce estrogen as a by-product.
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