DAY 16- YTW series Increase shoulder health and range of motion by working all your posture muscles! In all positions keep core engaged and pinch shoulder blades together. Raise arms to a 45 degree angle diagnolly in front of you as if making a Y shape. Make sure to inititate the movement with the shoulder blades and not thr arms. Keep arms straight, core engaged and palms facing each other. This targrts the front of the shoulder (anterior deltoids). Extend your arms straight out to the side to