Unlock your fastest, strongest runs yet with this high-intensity interval method that pushes endurance and shatters plateaus.

Unlimited data isn't always unlimited, even if it says so on the label. Here's everything you should know to avoid surprise ...

Have you ever listened to one piece of advice that stuck with you so much it changed the way you experience and analyze your running? It’s a powerful thing. That’s what happened when I learned a ...

I wrote last week about the benefit of rest-based interval workouts and briefly touched on the fatigue threshold. This week is all about understanding what this threshold is and how it can help you ...

The latest health-tracking feature on the Apple Watch has life-changing implications. Here's how to turn it on, and how it works.