Your body is perfectly designed for movement and when muscles contract and release well it creates a symphony of movement that feels easy. The principle of Reciprocal Inhibition states that when one muscle or group of muscles contract, the opposing muscles should release. When a muscle or group of muscles are not moving when they should be, this can present as limited range of motion and/or chronic pain or tension.Your body is perfectly designed for movement and when muscles contract and release well it creates a symphony of movement that feels easy. The principle of Reciprocal Inhibition states that when one muscle or group of muscles contract, the opposing muscles should release. When a muscle or group of muscles are not moving when they should be, this can present as limited range of motion and/or chronic pain or tension.