Medi Lift Neck helps relieve stress by stimulating the stemocleidomasoid muscle, a large muscle that goes from under the ears to the inner part of the collar bone. The primary function of this muscle is for rotating the head from side to side, and for flexing the neck. If you do a lot work at a desk or suffer from poor posture and neck pain, this sleek device is a practical and straightforward way to tackle this everyday problem.