A 45-year-old man exercised on a rowing machine for six minutes. A fitness monitor recorded his heart rate and breathing rate every minute. The graph below shows the results Explain the ways the man’s body has responded to the exercise. Use information from the graph above. - 7039

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Q1.

A 45-year-old man exercised on a rowing machine for six minutes.

A fitness monitor recorded his heart rate and breathing rate every minute.

The graph below shows the results

Explain the ways the man’s body has responded to the exercise. Use information from the graph above.

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One thought on “A 45-year-old man exercised on a rowing machine for six minutes. A fitness monitor recorded his heart rate and breathing rate every minute. The graph below shows the results Explain the ways the man’s body has responded to the exercise. Use information from the graph above. – 7039”

When you exercise, your heart rate goes up so more blood gets to your muscles and lungs. This gives the muscles more oxygen and glucose, and helps remove carbon dioxide and lactic acid quicker. Your breathing rate also increases to get more oxygen into your blood and remove more carbon dioxide. The extra oxygen is needed for respiration, which releases the energy for muscle contraction. If there isn’t enough oxygen, anaerobic respiration happens, causing lactic acid to build up, leading to oxygen debt and making your muscles ache or feel tired.