This practice gently works with the spine and the cranium and its sutures and fascia. It allows the restrictions of nerve passages to be eased and the movement of the cerebrospinal fluid through the spinal cord to be optimized. Physically the therapy involves the placing of hands on the patients head, spine, sacrum or other connective structures and working with the natural craniosacral rhythm. Touch is very light, typically around 5 grams. This treatment is subtle and has been used to treat headaches, TMJ, migraines, fibromyalgia and other chronic pain conditions, mental stress, neck and back pain.