CST is a gentle method of evaluating and enhancing the function of the craniosacral system, which is comprised of the membranes and cerebrospinal fluid that surround and protect the brain and spinal cord. By using a soft touch, about the weight of a nickel, practitioners release restrictions in the craniosacral system to improve the functioning of the central nervous system. By complementing the body's natural healing processes, CST is used as a preventive health measure for its ability to bolster resistance to disease, and is effective for a wide range of medical problems associated with pain and dysfunction. For more on craniosacral therapy.