Use this Swiss-ball workout to build more explosive power, increase your personal bests, and—let’s face it—boost your sex appeal. Your glutes do more than just round out the back of your pants.

Reformer Pilates has taken off in recent years, and it’s easy to see why. Machines such as the FOLD Reformer light up muscles you didn’t know you had, while sharpening strength, mobility, and control.

As runners, we prefer to be out there running. But we know, by now, that strength training is important for improving performance and preventing injury, so we make the time. Still, run-of-the-mill sit ...