A certified personal trainer shares how proper form and breathing can prevent injuries, boost endurance, and make every run feel easier.

Easy running, by definition, should feel easy. But as any runner knows, those long, slow runs can sometimes be the most difficult of a training program—both mentally and physically. Some good news: ...

Here’s what you’ll learn when you read this story: How a quirky potato chip drill can instantly improve your running form. Why relaxed hands are key to conserving energy and running efficiently.

Long runs are an essential part of any race-training plan, whether you’re prepping for your first 5K or your tenth marathon. The distance you rack up during these sessions may become daunting, but ...