During heavy exercise the breathing rate of a person slows down.
A) True
B) False

91.5k+ views
Hint: When we perform exercise, body movements occur we require more energy to perform the task and provide sufficient oxygen for organs to work efficiently. After the exercise has been performed a person needs more carbon dioxide to expel out which has been made during the exercise.

Complete answer:
When a person is performing some vigorous exercise, they experience fast respiration rate this happens as the following mechanism occurs inside the body:
For performing the work, we require energy and energy is obtained from the glucose or the carbohydrates in the form of ATP which helps us do the necessary work.

For maintaining the proper functioning of the body, organs need sufficient amounts of oxygen during the time of exercise: more oxygen, more energy needed by them.
To make sure the increased amount of oxygen needed an equal amount of carbon dioxide is produced which is expelled out during the expiration in the respiration process.

This causes the person to respire faster and deeper so that each and every organ gets proper oxygen which is generated by the oxidation of stored food resulting in the production of ATP which gives the energy to perform the body function.
Athletes are usually involved in performing the high intensity workouts like running, jumping which causes sudden increase of oxygen demand so that the organs do not collapse so large amount of energy is needed, more ADP and ATP production required.

Hence, the correct answer is option (B)

Note: During the time of vigorous exercise, anaerobic respiration is performed which leads to formation of lactic acid ADP production which generates less energy as compared to ATP causing pain in the muscle, muscle strain can also be formed.