One of my favorite corrective exercises to improve overhead mobility is the elbow wall walk. The benefits of this exercise are numerous, but there are three primary goals when you do it correctly. First, it activates the shoulders’ external rotators, which helps pull the head of the humerus into its ideal position. Second, the exercise activates the serratus anterior, a muscle that’s essential for upward rotation of the scapula. Third, the elbow wall walk teaches your client to reach overhead without extending the lumbar spine.