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

Determined to find something challenging but manageable, I found personal trainer Sydney Cummings Houdyshell’s recent ...

To improve the quality of movement, consider wearing ankle weights for slow, steady walks outside. Don’t wear ankle weights all day - start with the minimal weight and increase it gradually if needed.

Compete against multiple people regardless of the device and fitness tracker they are using with the Challenges app. The ...