MUSCLE PHYSIOLOGY

Detailed explanation-1: -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.

Detailed explanation-2: -Answer: The breathing rate during exercise is increased while during sleep it goes down.

Detailed explanation-3: -For more energy, the person needs more supply of oxygen because energy is released by the process of cellular respiration. For this more oxygen supply to the lungs, the person starts breathing rapidly.

Detailed explanation-4: -Expert-verified answer Your body uses more oxygen and absorbs more carbon dioxide as you exercise and your muscles work harder. To meet the increased demand, your breathing rate must increase from about 15 times per minute (12 litres of air) at rest to about 40–60 times per minute (100 litres of air) during exercise.

Detailed explanation-5: -Common causes of a high respiratory rate include anxiety, fever, respiratory diseases, heart diseases, and dehydration. Common causes of a low respiratory rate include drug overdoses, obstructive sleep apnea, and head injuries. If a person is experiencing an abnormal breathing rate, they should contact a doctor.