By Jessica Chia for Prevention
Your workouts may be less intense than you think. Here’s why: the go-to formula for calculating maximum heart rate—220 minus your age—is wrong for most adults, according to research published in the Scandinavian Journal of Medicine and Science in Sports.
In the study of 3,300 Norwegian adults, this standard formula was shown to underestimate top heart rate values in 77 percent of the cases. In fact, the formula churned out too-low results for up to 90 percent of those between the ages of 40 and 60, and in 60 to 69-year-olds, the inaccuracy translated to an average under-prediction of 15 beats per minute below the rate they could actually reach.
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