[James] has been building a heart rate monitor using a very cool TI chip. He needed a way to test his device, and commercial ECG simulators, like all biotech devices, are absurdly expensive. [James] ...

When Starla Garcia, 32, a runner based in Houston, Texas, was training for the 2019 Grandma’s Marathon, she noticed the data provided by her Garmin Forerunner 235 watch often seemed skewed, giving her ...

When the first Apple Watch made its global debut, Apple said it was a product that would enrich people's lives and encourage them to adopt a healthier lifestyle, thanks in part to a heart rate sensor ...