Ever wondered how to calculate what your heart rate should be during exercise? Click the link below to find out.
http://www.livestrong.com/article/378519-what-should-my-exercising-heart-rate-be/
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Ever wondered how to calculate what your heart rate should be during exercise? Click the link below to find out.
http://www.livestrong.com/article/378519-what-should-my-exercising-heart-rate-be/