Dumbbell Straight-Leg Deadlift
Focus on form, and this move will be your butt's new BFF.
DO IT: Grab a pair of five-to eight-pound dumbbells and hold them in front of your thighs, feet hip-width apart, knees slightly bent (a). Bend at your hips to lower your torso until it's almost parallel to the floor, keeping the weights close to your body (b). Return to standing, keeping the weights close to your body (as if you're shaving your legs with the dumbbells). That's one rep.
Dumbbell Bent-Knee Deadlift
Give your glutes a challenge: Increasing the weight boosts your metabolism.
DO IT: Set a pair of 10-to 15-pound dumbbells on the floor in front of you. Squat, keeping your chest up, and grab the dumbbells with an overhand grip. Your arms should be straight and your lower back slightly arched, not rounded (a). Contract your glutes and stand up with the dumbbells, straightening your legs, thrusting your hips forward, and pulling your torso back and up (b). Slowly lower the dumbbells to the floor. That's one rep.
Single-Leg Hip Extension
Weak glutes and tight hip flexors cause your pelvis to tilt forward, pushing your abdomen out and creating that no-good belly pooch. This move evens you out.
DO IT: Lie faceup with your arms out to the sides, right knee bent, left leg straight and raised a few inches off the floor (a). Lift your leg until it's in line with your right thigh and push your hips upward, forming a straight line from shoulders to knees (b). Pause, then lower to start. Do all reps, then switch legs and repeat.