OVERVIEW OF THE IMMUNE SYSTEM
LYMPHATIC TISSUES AND ORGANS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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When you exercise, your muscles need more oxygen.
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When you exercise, you feel especially nervous.
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When you exercise, your brain becomes hyperactive.
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When you exercise, your cells need more carbon dioxide.
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Detailed explanation-1: -During exercise, your body may need three or four times your normal cardiac output, because your muscles need more oxygen when you exert yourself. During exercise, your heart typically beats faster so that more blood gets out to your body.
Detailed explanation-2: -When we run our cells require more energy to work, so they need more oxygen which is provided by the blood. To increase oxygen level the blood has to be pumped faster and so our heart beat rate increases.
Detailed explanation-3: -During heavy exercise, fast running, cycling, walking for many hours or heavy weight lifting, the demand for energy is high but the supply of oxygen to produce the energy is limited. So, the heart rate increases to supply more oxygen and glucose to the respiring cells.
Detailed explanation-4: -So, more than 200 beats per minute heart rate during exercise is dangerous for you. If you develop palpitations, an irregular heart rate, shortness of breath, or chest pain, you need to seek medical help right away. This could be a sign of an impending heart attack or other life-threatening heart problems.