# Heart rate reserve

Heart rate reserve is the difference between your maximum and resting heart rate.

The Karvonen method sets training zones as resting heart rate plus a percentage of the reserve, which suits people with low resting heart rates better than a straight percentage of maximum.

Also called: Karvonen.

Related: [Zone 2](https://revns.com/dictionary/zone-2.md), [Resting heart rate](https://revns.com/dictionary/resting-heart-rate.md)

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Canonical: https://revns.com/dictionary/heart-rate-reserve
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