RELIEVES STRAIN TO MUSCLES AND LIGAMENTS: The 12” Gentle Plexus Chirp Wheel+ wheels help stretch and massage the thoracic and lumbar region muscles improving strength, flexibility, and balance. This has a powerful preventative effect that reduces the chance of injury and enables muscles to hold up better against strain.STRENGTHENS MUSCLES AND IMPROVES POSTURE: The 12” Gentle Plexus Chirp Wheel+ wheels strengthen the muscles around the spine which support the discs which relieves pressure on the spinal cord/nerve roots and may slightly reduce the bulge/continued leakage of the nucleus. The wheels correct the curvature of the spine which in turn improves posture and helps restore a healthy S-curve resulting in reduced strain.MAY HELP PREVENT AND RELIEVE PAIN FROM FUNCTIONAL DISORDERS: The 12” Gentle Plexus Chirp Wheel+ wheels may help prevent functional disorders such as muscle tightness, scar tissue build-up, and muscle/joint spasms and may help prevent common conditions such as Herniated/bulging discs, Arthritis, and Osteoporosis.BUILT STRONG: The 12” Gentle Plexus Chirp Wheel+ wheels have an injection molded rigid core that supports up to 500lbs!100% HAPPY BODY GUARANTEE: If your body isn’t 100% satisfied with the product, send it back! No questions asked!