Significant Take note: Never rotate the shoulder for the duration of this movement. It is simply an up and down movement. Usually do not circle the shoulders forward or back; this could cause injuries. Anterior Deltoid: Originating within the collar bone and attaching on the humerus, the anterior (front) deltoid http://bodydynamic40493.aioblogs.com/23986321/5-simple-techniques-for-functional-training