Beats just released its long-anticipated Powerbeats Pro 2. Here's how to measure your heart rate with these earbuds during a ...

You probably were told your resting heart rate at your last checkup. Or maybe you get alerts throughout the day thanks to a ...

Experts explain the best ways to measure your cardio fitness, plus the most important strategies for improvement.

Nothing feels more satisfying than turning your tracker off after a run and appreciating the miles logged on the screen. But how do you decide how many miles to run in the first place? There’s ...