The law is that every action has an equal and oposing reaction. Applying that to massage therapy frequires knowlege of the reflexes that the body has to each movment. You may know that a normal body will lift the left arm to balance lifting the right leg. There are myryads of much smaller reflexes that may be stressed by injury or imbalance in the body.
For a discussion of these and intractive bodywork methods to use join me at
http://hansmassage.blogspot.com/index.html
Hans Albert Quistorff, LMP
Antalgic Posture Pain Specialist