Alexander Technique

The Alexander Technique is a discipline of alternative medicine, often used by theater artists, musicians and dancers to improve their performances. The technique focuses on gaining control over the muscles involved in the relationship between the head, neck, and spine with the goal of improving posture and developing freer and more natural movements and voice. An example of its use in theater: actors habitually enter a “startle pattern,” by tilting their head backwards and downwards, causing them to lose the strength of their voice, or actually lose their voice. The Alexander technique allows them to unlearn these habitual muscle reactions and gain more precise control over the systems important for voice projection in the theater.

Sources Cited:
Wikipedia