Primary Muscle Group: Quadriceps femoris, Gluteus
Muscle Groups Worked in This Exercise: Thigh flexors.
Preparation: Sit on the ball with your feet on the floor. Slide down the ball, walking your feet forward, until your lower back rests against the ball. Your thighs should be parallel to the floor, so make sure your feet are far enough from the ball. Place the band under one foot and grasp an end of the band in each hand and bring your hands up by your hips.
Breathing: Exhale while straightening leg; inhale as you return to start.
Execution: This time, straighten your right leg out in front of you and then back down to start position. Do up to six repetitions on one leg and then switch legs.
Comments: This thigh blaster makes your core muscles work harder to keep you balanced. It also increases the challenge to your working leg by performing repetitions before switching legs.