Ask the doctor: Are my blood pressure and heart rate changing normally during exercise?
A different pattern occurs in adults who exercise a lot. Over time, their hearts develop ways to deliver more blood with each beat through better filling and more vigorous contractions. In regularly active people, the heart rate tends to rise more slowly in response to light exercise than in people who don't exercise much. But their peak heart rates can and do climb to relatively higher levels as they move into strenuous activity.
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