This exercise is designed to strengthen the oblique muscles which are crucial for trunk, spine, and core movements. Strengthening these muscles supports the lower back and improves general posture, essential for dancers' overall performance and health.

Preparation: Students should lay on their left side towards the front of the mat, extending the left arm in line with the head. Their right hand should be placed on a fusion ball in front of the body.

Steps:

1. Students gently press their palm into the fusion ball, lifting the upper body while feeling a downward pull in the trapezius muscle. They then turn their head to the right, looking directly over the shoulder.

2. Remind them to keep the left side of the rib cage from collapsing and to return slowly to the mat.

3. They lift their legs in parallel and lower them back down, maintaining control the whole way.

4. They roll onto their back, and unfold their legs in devant in parallel as the ball reaches towards the feet. Engaging their deep abdominal muscles will help them stay balanced.5. Guide them to unfold the legs and roll onto the alternate side.

6. Repeat the sequence from the beginning.

Focus: Check that students maintain proper alignment of the head, spine, and ribs throughout the exercise.