The basic concept of guided meditation is to relax. This is done by taking oneself on a guided tour of sorts through their own body. In the practice of guided meditation, it is normal to find a focus point in the body and begin there, someplace that is easy to relax.
While staying focused on the body and in particular the muscles, the practitioner of guided meditation attempts to relax the muscles of the body. Allowing the body to completely relax allows the practitioner of guided meditation to next completely relax the mind.
When the mind and body are completely relaxed, the person can begin to concentrate on focusing his thoughts and ideas during the guided meditation.