Stand tall or sit upright (not pictured).
Bring your left arm across your chest, holding it below the elbow with your opposite. Keep the shoulders relaxed away from the ears.
Breathe deeply and hold for 10-30 seconds. Repeat on opposite side.
Stretch to the point of "mild discomfort," not to the point of pain. Never bounce. Straighten but do not lock elbow.
Muscles Stretched:Shoulder and arm