What does the exercise 'head nods' primarily aim to teach?

The exercise 'head nods' primarily aims to teach the separation of the head and cervical spine. This exercise is fundamental in Pilates as it helps practitioners develop an awareness of the relationship between the head, neck, and spine. By practicing head nods, individuals learn to engage their cervical spine in a controlled manner, which enhances their ability to stabilize the head while maintaining a neutral spine position. This separation is crucial for effective movement throughout Pilates and daily activities, allowing for better coordination and reduced strain in the neck and upper back. The focus is on mobilizing the head independently from the rest of the spine, which is essential for achieving proper alignment and control during more complex movements in Pilates.