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.

If your typical leg day consists of just a few general moves spread between the squat rack and leg press machine, you're leaving superhero-sized potential gains out there on the gym floor. A full-on ...

Start in a supine position with your heels resting on a Swiss ball. Bend at the knees and raise your hips as you bring the ball closer to you. Return to the starting position without letting your hips ...

“[The Swiss ball] also gives you more bang for your buck with the added instability,” writes Maryniak in an Instagram post featuring the moves. The instability forces your core to work in overtime to ...

Hip extension exercises are important for strengthening the muscles that help stabilize the pelvis and propel the body during such movements as walking, running, jumping, and standing up. Hip ...