Biology 0.0 / 5 ? BiologyRespiration and exerciseGCSEWJEC Created by: lynwen kellyCreated on: 09-10-17 12:07 What happens to your heart rate during exercise? Your heart rate goes up. 1 of 5 What do you need more of during exercise? Oxygen 2 of 5 What happens to your blood vessels during exercise? They dilate. 3 of 5 What is a safe level for your heart rate? 160 beats per minute 4 of 5 Why do we need more oxygen during exercise? For our muscles. 5 of 5
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