Exercise intensity: How to measure it - Mayo Clinic
https://www.mayoclinic.org/healthy-lifestyle/fitness/in-depth/exercise-intensity/art-20046887
WEBAug 25, 2023 · The maximum heart rate is the upper limit of what your heart and blood vessel system, called the cardiovascular system, can handle during physical activity. If you're healthy, you can figure out your approximate maximum heart rate by multiplying your age by 0.7 and subtracting the total from 208.
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