Question

why do we deep breath during or immediately after exercise
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Answer 1

Answer:

When you exercise and your muscles work harder, your body uses more oxygen and produces more carbon dioxide. To cope with this extra demand, your breathing has to increase from about 15 times a minute (12 litres of air) when you are resting, up to about 40–60 times a minute (100 litres of air) during exercise.

Answer 2

Explanation:

When we exercise our body burns stored energy into ATP

ATP is used for different active processes in the body

This process is known as hydrolysis

when muscles need more energy ,you breath and heart rate automatically  increases to get more energy