03/23/2026
That means the nerves, arteries, and veins running from your neck down through your shoulder and into your arm are getting squeezed because of how you’re positioned all day.
That numbness in your hands. That tingling down your arm. The cold fingers. The weakness in your grip. It might not be carpal tunnel. It might be happening up here – at the thoracic outlet – because your shoulders have been sitting forward for years.
When your shoulders round forward, your peck, minor, shorten and tightens. It pulls the shoulder blade forward and down, narrowing the space between your collarbone and first rib. That’s the exact space those nerves and blood vessels passed through. Less space means more compression. More compression means symptoms.
this is why it’s important to stretch your pecks. Not just for aesthetics. Not because some influencer said to. Because a short, tight peck minor is literally closing the door on the neurovascular structures that feed your entire arm.
but here’s the part most people miss – stretching the peck alone isn’t enough if your thoracic spine is locked in flexion, and your scapular stabilizers aren’t pulling the shoulder blade back into position. You have to open the chest and strengthen the upper back. One without the other is a temporary fix.
if you’ve been dealing with unexplained, numbness, tingling, or weakness in your arms and hands – stop assuming it’s carpal tunnel and start looking at your posture. The answer might be sitting right between your collarbone and your first rib.
📍 Jamison Family Chiropractic | Richmond VA
🔗 RVAchiropractic.com