When you put together a training program for an athlete, or even an average person just looking to improve their athleticism, ...

The core gets a lot of attention when it comes to aesthetics. But your torso muscles—which include your abs, back, glutes, and hip flexors—play a crucial role in running that goes way beyond looks.

If it’s not enough that steeplechase champion Emma Coburn incorporates core activation exercises into her warmup routine, maybe we can convince you. It’s no secret that core workouts promote better ...