If you want the most accurate device for monitoring your heart rate, opt for a chest strap heart-rate monitor. Unlike ...

Add Yahoo as a preferred source to see more of our stories on Google. Using a chest strap heart rate monitor can give you accurate, actionable insights to help improve your running. What is the best ...

Pretty much every fitness tracker and smartwatch has an optical heart rate sensor, but they're not always perfectly accurate. Not only can you get better accuracy by wearing a chest strap heart rate ...