Question

What is meant by breathing ?what happen to the rate of breathing during vigrous exercise

Answer 1

The process of taking air into and expelling it from lungs.
Breathing rate becomes faster as for respiration oxygen is needed and during exercise the amount of oxygen in our body becomes less so breathing rate becomes faster so as to fulfil the requirements of oxygen in our body.

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Answer 2

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• The number of times a person breeds in a minute is termed as the breathing rate. during breathing in haitian and exhalation take place alternately . A breath means one inhalation one exhalation..
• on an average, an adult human being at the rest breeds in and out 15-18 times in a minute. during heavy exercise , the breathing rate can increase upto 25 times per minute.