<a href="http:&#x2F;&#x2F;www.heart.org&#x2F;HEARTORG&#x2F;HealthyLiving&#x2F;PhysicalActivity&#x2F;FitnessBasics&#x2F;Target-Heart-Rates_UCM_434341_Article.jsp" rel="nofollow">http:&#x2F;&#x2F;www.heart.org&#x2F;HEARTORG&#x2F;HealthyLiving&#x2F;PhysicalActivity...</a><p>It&#x27;s not the literal maximum (the maximum you can achieve), it&#x27;s the average based on age. So you find the maximum for your age in the chart (or calculate it) and set target zones when exercising.<p><a href="http:&#x2F;&#x2F;www.runnersworld.com&#x2F;ask-the-sports-doc&#x2F;what-is-my-maximum-heart-rate" rel="nofollow">http:&#x2F;&#x2F;www.runnersworld.com&#x2F;ask-the-sports-doc&#x2F;what-is-my-ma...</a> - another discussion about it.