Question

what is meant by breathing? what happens to rate of breathing during vigorous exercise? why do our muscles sometime get fatigue during these exercise ​

Answer 1

Answer:

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breathing :- inhalation and exhalation of air is called breathing...........

40-60 is the rate of breathing during doing vigorous exercise.......

Muscle fatigue is the decline in ability of a muscle to generate force. It can be a result of vigorous exercise but abnormal fatigue may be caused by barriers to or interference with the different stages of muscle contraction. There are two main causes of muscle fatigue: the limitations of a nerve’s ability to generate a sustained signal (neural fatigue); and the reduced ability of the muscle fiber to contract (metabolic fatigue).

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