Suitcase Carry to Re-Pattern Core and Shoulder Stability

The suitcase carry builds asymmetrical core stability and shoulder girdle resilience by challenging your balance under an offset load.

weighted / loaded carry · Strongman Training (Dan John) · This movement addresses states of imbalance, where one side of the body feels consistently weaker or less integrated, often manifesting as low back or shoulder discomfort. · Walk 25 meters, switch hands, walk 25 meters back. Repeat 3–5 rounds.

Why it works

The suitcase carry engages the deep core musculature, particularly the quadratus lumborum and obliques, to resist lateral flexion and rotation. As you walk with a load in one hand, your body instinctively braces against the pull, creating a reflexive co-contraction of your abdominal wall and spinal stabilizers. This isn't about brute force; it's about nuanced muscular control to maintain upright posture. On a tissue level, the continuous tension under load mobilizes the fascial lines connecting the shoulder to the opposite hip. The trapezius, rhomboids, and serratus anterior work overtime to stabilize the scapula against the downward drag of the weight. This sustained isometric effort improves the endurance of these stabilizing muscles, enhancing shoulder health and reducing vulnerability to injury. It also helps to re-educate the nervous system on how to manage asymmetrical loads, a common demand in daily life that often goes untrained.

How to practice

Select your weight. Pick a dumbbell or kettlebell that feels challenging but allows you to maintain good form for at least 30 seconds. Start lighter than you think you need. I found a 24 kg kettlebell sufficient for my first few attempts.
Grip the weight. Stand tall with the weight in one hand, arm extended down at your side, palm facing your body. Your grip should be firm, but avoid squeezing with maximum effort. Keep your shoulders level, resisting any tendency for the loaded side to drop.
Engage your core. Imagine you're about to be gently poked in the stomach. Brace your abdominal muscles without holding your breath. This creates a solid foundation for your spine and pelvis.
Walk with purpose. Begin walking slowly and deliberately. Focus on keeping your hips and shoulders level and your torso upright. Resist any lean to the side. Your gaze should be forward. Inhale for two steps, exhale for two steps, maintaining a steady, rhythmic breath.
Maintain posture. Pay attention to your shoulder on the loaded side. It shouldn't creep up towards your ear; instead, imagine pressing it gently down and back, maintaining space between your ear and shoulder. Keep your chin slightly tucked, crown of the head reaching toward the ceiling.
Switch hands. After your prescribed distance or time, set the weight down, take a few breaths, and switch the weight to the other hand. Repeat the process, observing any differences in stability or effort between sides.
Select your weight. Pick a dumbbell or kettlebell that feels challenging but allows you to maintain good form for at least 30 seconds. Start lighter than you think you need. I found a 24 kg kettlebell sufficient for my first few attempts.
Grip the weight. Stand tall with the weight in one hand, arm extended down at your side, palm facing your body. Your grip should be firm, but avoid squeezing with maximum effort. Keep your shoulders level, resisting any tendency for the loaded side to drop.
Engage your core. Imagine you're about to be gently poked in the stomach. Brace your abdominal muscles without holding your breath. This creates a solid foundation for your spine and pelvis.
Walk with purpose. Begin walking slowly and deliberately. Focus on keeping your hips and shoulders level and your torso upright. Resist any lean to the side. Your gaze should be forward. Inhale for two steps, exhale for two steps, maintaining a steady, rhythmic breath.
Maintain posture. Pay attention to your shoulder on the loaded side. It shouldn't creep up towards your ear; instead, imagine pressing it gently down and back, maintaining space between your ear and shoulder. Keep your chin slightly tucked, crown of the head reaching toward the ceiling.
Switch hands. After your prescribed distance or time, set the weight down, take a few breaths, and switch the weight to the other hand. Repeat the process, observing any differences in stability or effort between sides.