Exercise

The word exercise can mean the following:

Breathing

Active exhalation during physical exercise helps the body to increase its maximum lung capacity, and oxygen uptake. This results in greater cardiac efficiency, since the heart has to do less work to oxygenate the muscles, and there is also increased muscular efficiency through greater blood flow. Consciously breathing deeply during aerobic exercise helps this development of the heart lung efficiency.

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During breathing, males mostly use the intercostal muscles in the rib cage, females mostly use abdominal muscles. In strenuous exercise, it is likely that these differences diminish.

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