Heart Rate on Watch: A False Sense of Security As runners, we're constantly seeking ways to optimize our performance.
One popular tool for doing so is heart rate monitoring, which allows us to track exertion levels in real time. However, the accuracy of these measurements has been a concern.
Optical heart rate sensors on watches are not reliable enough to trust. While they've improved significantly over the years, they still fall short when it comes to providing accurate readings during intense exercise.