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 ...

If you’ve read even a small amount of running research, you’ll likely have come across the term ‘lactate threshold’. But what does it actually mean? In essence, your lactate threshold is the point at ...

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 ...

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