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

A run coach and exercise scientist break down how many miles you should run per day based on your goals, whether it’s for ...

Sprint workouts torch belly fat, boost metabolism, and improve insulin sensitivity for faster results. Learn how to do them for maximum fat burn.

Whether you love cardio or loathe the mere thought of it, the truth is that it's good for you. Some of us will happily go on ...