The Oov has been designed to mimic the movement of the spine. All 3 curves of the spine are supported. Lying on the Oov axially elongates the spine, and the pelvis is up off the ground and free to move in all 3 planes – meaning you also have to control the pelvis in all 3 planes. The head is lower than the hips, inhibiting the use your accessory respiratory muscles to breathe, thereby promoting Diaphragmatic Breathing. Research shows that breathing from our accessory muscles up-regulates the fight or flight response, but breathing from the Diaphragm helps calm the nervous system down. The Diaphragm is also part of the core and needs to be integrated into core training exercises. The Oov is Dynamic due to the Proprietary material, and is soft and flexible, but only to a point, where the foam starts to push back. The Design and Material work together to create a device where you have to find balance, use your core to control your trunk and learn how to move one part of your body without moving another. The Oov can be used supine, prone, side lying, kneeling and standing.