Craniosacral is a gentle, non-invasive and effective 

form of hands-on therapy and healing, appropriate for all ages and stages. The amount of pressure used is generally less than 5 grams (the weight of a nickel). CST works primarily with the soft tissues, membranes and fluid that protect your brain and spinal cord; the core of your nervous system. The fluid within the membranes is continuously draining and refilling. This creates gentle, rhythmic, expanding and contracting movements that can be felt anywhere in the body by a trained therapist. These movements are the craniosacral rhythm. They occur at a rate of about six to twelve complete cycles per minute. I gain valuable information about where the body would most benefit from change by monitoring the craniosacral rhythm. The source of pain or loss of function is not always obvious. CST helps release restrictions within the body’s three dimensional web of fluid and connective tissue, which extends out into every party of the body.  It is essentially a whole body approach.

http://www.emilyrosecraniosacral.com/craniosacral-therapy/