Researchers had participants wear the fitness trackers while walking or running on a treadmill and while riding an exercise bike to determine how well the trackers measured heart rate and energy expenditure. Paul Sakuma/Courtesy of Stanford University School of Medicine hide caption

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Paul Sakuma/Courtesy of Stanford University School of Medicine

Shots - Health News

Fitness Trackers: Good at Measuring Heart Rate, Not So Good At Measuring Calories

A study of seven popular fitness trackers found they are generally good at measuring heart rate, but may mislead consumers about how many calories they have burned.

Rob Quist is the Democrat running in the Montana special election. Don Gonyea/NPR hide caption

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Don Gonyea/NPR

Trump Casts Shadow Over Tightening Montana Special Election

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Researchers had participants wear the fitness trackers while walking or running on a treadmill and while riding an exercise bike to determine how well the trackers measured heart rate and energy expenditure. Paul Sakuma/Courtesy of Stanford University School of Medicine hide caption

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Paul Sakuma/Courtesy of Stanford University School of Medicine

Fitness Trackers: Good at Measuring Heart Rate, Not So Good At Measuring Calories

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Laura Ramadei (center) as Annie, who gets involved with a different couple in every episode of the web series Unicornland. Courtesy of Unicornland hide caption

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Courtesy of Unicornland

It's Polyamorous Polysaturation — Unconventional Relationships Abound On TV

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