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Increasing cardiorespiratory fitness levels is difficult for experienced athletes because __________. A.they are not motivated to increase their levels of cardiorespiratory fitness
B.they cannot commit the training time to increase their cardiorespiratory fitness
C.they have already achieved high levels of cardiorespiratory fitness
D.none of the above

Respuesta :

W0lf93
C is the correct answer. Regular exercise helps increase the heart's size and the lungs' capacity, increasing cardiorespiratory endurance and fitness, but once you have reached a high level of fitness it can be hard to keep making significant gains on this.
gre8kr

C is correct byeeeeee

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