Shoulders & Upper Body

Tight shoulders don't cause sharp running pain, but they cost energy over the course of a marathon. When the shoulders round forward and the arms can't swing freely, your upper body has to work harder — wasting energy and reducing breathing capacity. Shoulder mobility keeps your arm swing efficient and your posture upright when fatigue sets in.

Shoulder CARs

Slow, controlled circles of the shoulder through its full range of motion. Like a very slow arm circle, pushing into the end of your range in every direction. This keeps the shoulder joint healthy and mobile, and helps you notice where you're getting stiff before it becomes a problem. Standing position makes it easy to do anywhere — before a run, at your desk, or as part of a mobility session.

Equipment: bodyweight | Type: active | Position: standing | Duration: 45s

Regions: Primary: upper_anterior · Secondary: upper_posterior

Coaching Cues

• Stand tall. Make a fist with one hand to create tension through the arm.
• Slowly bring the arm forward, then up overhead, then behind you, and back down — one big, smooth circle.
• Make the circle as large as your body allows. Gently push into the tight spots rather than skipping over them.
• Keep your core tight and your torso completely still. No arching your back, twisting, or leaning to make the circle bigger.
• Each full circle should take at least 15 seconds. Slower is better.
• After one direction, reverse and circle the other way.

Common Mistakes

• Moving too fast. Shoulder CARs should feel painfully slow. If you're whipping the arm around, you're missing the tight spots entirely.
• Shrugging your shoulder up toward your ear. Keep the shoulder blade pulled down throughout the circle.
• Arching your back or twisting your torso to get the arm further behind you. This fakes range that you don't actually have at the shoulder. Keep the torso still.
• Skipping the hard parts. The range behind your body is usually the most restricted — that's the part that needs the most attention.

Wall Slides

Standing with your back against a wall, you slide your arms up and down while trying to keep your arms, hands, and back all in contact with the wall. This is harder than it sounds — and that's the point. The wall gives you instant feedback on where your mobility is limited. It builds the overhead shoulder mobility and upper back control that prevents your posture from collapsing during long runs.

Equipment: bodyweight | Type: active | Position: standing | Duration: 30s

Regions: Primary: upper_posterior · Secondary: upper_anterior

Coaching Cues

• Stand with your entire back against a wall — your head, upper back, and lower back should all touch.
• Place the backs of your hands and your elbows against the wall, roughly at shoulder height. This is the starting position.
• Slowly slide your arms up toward the ceiling while keeping your hands, elbows, and back all in contact with the wall.
• Go as high as you can without anything coming off the wall. For most people, this won't be very far — and that's normal.
• Slowly slide back down, squeezing your shoulder blades together at the bottom.
• Move slowly. This is about control and contact with the wall, not speed.

Common Mistakes

• Back arching off the wall. This means your upper back is stiff and your lower back is compensating. Only go as high as you can with your back flat on the wall.
• Arms or hands coming off the wall. This means you've exceeded your current shoulder range. Stay in the range where everything maintains wall contact.
• Shrugging your shoulders up as your arms go higher. Keep the shoulder blades pulled down as you slide up.
• Moving too fast. Slow slides reveal the stiff spots. Fast slides let you cheat past them.

Doorway Chest Stretch

Standing in a doorway with your forearm against the frame, you step forward to stretch the front of your shoulder and chest. This directly counters the rounded-shoulder posture that comes from running, sitting, and phone use. When the chest muscles shorten, they pull the shoulders forward and reduce how upright you can stand. This simple stretch opens the front of the shoulder back up.

Equipment: bodyweight | Type: static | Position: standing | Duration: 45s

Regions: Primary: upper_anterior

Coaching Cues

• Stand in a doorway. Place your forearm flat against the door frame with your elbow at about shoulder height.
• Gently step through the doorway with the same-side foot until you feel a stretch across your chest and the front of your shoulder.
• Keep the shoulder blade pulled back and down — don't let it roll forward.
• Hold the stretch and breathe slowly. With each exhale, you can sink slightly deeper.
• To stretch different parts of the chest, adjust your elbow height — higher stretches the upper chest, lower stretches the lower chest.
• Repeat on the other side.

Common Mistakes

• Shrugging the shoulder up toward the ear. Keep the shoulder blade actively pulled down and back.
• Twisting your torso to get deeper into the stretch. Your shoulders and hips should stay square. The stretch comes from stepping through, not twisting.
• Pushing too hard. A gentle, sustained stretch is more effective than forcing it. The stretch should feel moderate — around 5 out of 10 intensity.
• Doing only one side. Even if one side feels tighter, stretch both sides equally.

Band Pull-Apart (Slow)

Holding a light resistance band at chest height, you slowly pull it apart by squeezing your shoulder blades together. This strengthens the upper back muscles that hold your shoulders back and your posture upright. The slow tempo is the key — it turns a strength exercise into a mobility exercise, building both range of motion and control in the retracted (shoulders-back) position.

Equipment: resistance_bands | Type: active | Position: standing | Duration: 30s

Regions: Primary: upper_posterior

Coaching Cues

• Hold a light resistance band at chest height with both hands, arms extended in front of you.
• Pull the band apart by squeezing your shoulder blades together. Think about bringing the shoulder blades toward each other, not just pulling with your arms.
• Move very slowly — 3 seconds to pull apart, hold the squeezed position for 2 seconds, 3 seconds to return.
• At full retraction, you should feel a strong squeeze between your shoulder blades.
• Keep your shoulders down throughout — don't let them shrug up toward your ears.
• Use a light band. If you're straining, the band is too heavy.

Common Mistakes

• Moving too fast. Fast reps turn this into a strength exercise and miss the mobility benefit. The slowness is what builds control and range in the retracted position.
• Using too heavy a band. This is about range of motion and control, not strength. A light band with slow, full-range reps is far more effective than a heavy band with short, fast reps.
• Shrugging the shoulders. Keep them pulled down. If they creep up, the band is too heavy.
• Pulling with the arms instead of the shoulder blades. Think "squeeze the shoulder blades together" not "pull the band apart." The result looks the same, but the intent changes which muscles do the work.