Swap dumbbells for a medicine ball to improve core strength and stability ...
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.
Move with control and focus, not speed, focusing on inhaling and exhaling as you move. Aim for 45 seconds of work, 15 seconds of rest and 2 rounds; if you have time, add more rounds.