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[[File:HeartRateSimplified.png|right|thumb|500px|A simplified chart of heart rate against exercise intensity showing [[Maximum Heart Rate]], [[Heart Rate Reserve]], [[Resting Heart Rate]] and [[Heart Rate Deflection]].]]
As exercise intensity increases the heart beats faster, and it's relatively easy to measure heart rate while exercising. This makes heart rate an ideal way of evaluating exercise intensity. Exercise heart rate should be evaluated as a percentage of [[Heart Rate Reserve]], which can be used to estimate [[VO2max|V̇O<sub>2</sub>max]].
=See Also=
