This simple floor exercise is redefining how Americans train their core—without crunches, machines, or strain on the spine.

Muscle strains are an unfortunate inevitability for active people. Sooner or later, everyone will deal with a muscle strain that seemingly appears out of nowhere. So it makes sense to develop a system ...

Lower back pain is a common ailment affecting many Americans, often exacerbated by improper lifting techniques. Excess weight, especially in the midsection, increases strain on lower back muscles, ...

Get stronger without straining your knees, hips, or shoulders.

Learn how to effectively strengthen your pelvic floor with targeted core exercises. Physical therapists share moves to ...

Leoni Jesner is a fitness, health, and lifestyle writer who has contributed to Byrdie and LIVESTRONG.com, among other publications. She is also a personal trainer, mat Pilates instructor, and ...