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Heart rate and stroke volume will both increase when you exercise because the heart will have to beat faster in order to transport more blood around the body, and every beat will pump a larger volume of blood out of the heart. This means that oxygen and essential nutrients can be transported around the body more quickly and efficiently to where they are needed. Blood pressure is the pressure of the blood in the arteries as it travels around the body and due to this, it will also increase as a result of increasing heart rate and stroke volume. Respiratory rate and tidal volume will both increase because you breathe more often and heavier when exercising. As a result of this, respiratory minute volume (RR*TV) will increase because the amount of gas inhaled or exhaled from the lungs in a minute will get larger. All of these changes will begin to happen as soon as you start exercising and will continue to increase until you finish exercising.

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