Understanding Behind-the-Back Reach Reaching behind your back to scratch between your shoulder blades, fasten a bra, or tuck in your shirt requires shoulder internal rotation combined with extension. This is one of the most commonly restricted shoulder movements because modern life rarely demands it. The restriction typically develops in the posterior shoulder capsule and external rotator muscles. Forward shoulder posture exacerbates the problem by chronically shortening internal rotators while weakening external rotators. Restoring this movement requires targeted work on the specific tissues involved. What Limits This Movement Posterior capsule tightness: The back of your shoulder joint capsule stiffens from lack of use. External rotator tightness: The muscles that rotate your arm outward become short and resistant to lengthening. Thoracic stiffness: A stiff upper back limits scapular movement needed for full shoulder range. Start your 14-day free trial to access shoulder mobility programs. Behind-the-Back Reach Exercises These exercises target the specific limitations preventing your reach. Shoulder Internal Rotation JME 188 Sitting in your chair, raise one leg up by bending at the knee. Be controlled on the way up and on the way down. Shoulder Blade Mobility JME 189 *Desk Required: With one hand on your desk, bend your upper body forward while maintaining the position of your hand on the desk. Feel a gentle stretch in your forearm and then return to the start. Thoracic Rotation JME 171 Sitting in your chair, raise one leg up and in front of you. Then, bend at your knee to find 90 degrees and then return to a straight position. Arm Circles JME 186 Sitting in your chair, extend one leg forward. Then, extend your upper body over that leg and hold for a stretch. Safe Progression Never force this movement. Use a towel or strap between hands to bridge the gap initially. Focus on progressive improvement rather than immediate achievement. Shoulder injuries from forcing range are common and preventable. Start your 14-day free trial and restore your reach with simplmobility.