I can’t wait for this run to be over! You may think that I most frequently hear that phrase in my head while completing a tough run, like an interval session or a dreaded tempo workout. False. I long ...

Run stronger, smarter, and more efficiently with the Runner’s World Guide to Running Form. Some good news: These form mishaps ...

To understand ‘conversational pace’, we need to talk about zone 2 – a subject on the lips of seemingly every running influencer. As a result, you may be feeling a little perplexed at what ...

At some point during the past decade, fitness publications began gushing over workouts that emphasized short, hard effort reps, aka high-intensity interval training (HIIT). As the broader public ...

One of the big debates in endurance sports these days is about “training intensity distribution,” which is a fancy term for how much of your training time you spend going easy, medium, or hard. The ...

Running too fast is a beginner mistake, but that doesn’t mean your runs always have to be turtle-slow. Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal ...