10 Body Fails Connected to the Core
Published by Kelly Dean, MPT
Published Date: March 19, 2025Are You Tired of Your Body Letting You Down? Take Back Control with The Tummy Team
If you’re struggling with daily pain, discomfort, or weakness, your body isn’t failing you—it’s signaling that something is missing. The good news? You don’t have to live this way. The Tummy Team has the solution you’ve been searching for!
Many of the most common (but not normal) body issues stem from Functional Core Weakness. When your core is weak, your body compensates in ways that lead to pain, instability, and frustration. But you can change that—starting today.
At The Tummy Team, we specialize in Functional Core Rehab, helping you rebuild deep core strength to eliminate pain and regain stability for real-life movement. Every body has an optimal level of function, and we’re here to help you reach yours using simple, proven strategies that fit into your everyday routine.
Top 10 Body Issues Caused by Functional Core Weakness—And How You Can Fix Them
1.) Sciatica
Sciatica presents as pain or numbness that often starts deep in your butt muscle and can shoot down your leg and in severe cases can cause pain in your calf and foot. Functional core weakness is a common and treatable cause of sciatica. When the core is weak, it fails to effectively stabilize the pelvis. As a result, pelvic muscles compensate. Compensation leads to muscle tightness. Chronically tight internal hip muscles restrict the sciatic nerve and cause sciatica.
The Tummy Team starts with retraining your posture, rebuilding your internal core muscles and then releases these compensation patterns and replaces it with optimal alignment. You can get started immediately with our series: Mastering Active Sitting and Optimal Alignment for Functional Core Strength.
2.) Mid back pain
Mid back pain is that nagging or achy pain right between the shoulder blades. This pain can be all day long but more commonly is noticed during chores like laundry, cooking, dishes or with daily parenting postures. Chronic collapsed postures where our head is protruding forward and our shoulders are rounded is always connected to internal core weakness.
At The Tummy Team we address this postural weakness on day one! Retraining the internal core muscles and setting up your environment to support your core muscles as you build postural strength is essential to eliminating this mid back pain for good. We have resources to help you immediately in our family series: Upper Back Pain Relief and Your Body’s Owners Manual.
3.) Low Back Pain
Low back pain is so common in our culture that we assume it is normal. Common and normal are not the same thing! Low back pain is the most common symptom of functional core weakness. The internal corset muscle (Transverse Abdominis) wraps around your torso like a built-in back brace to provide support and stability to your lumbar spine. But if the core muscles are inactive and the torso collapses this “built in back brace” instead resembles a deflated balloon around your waist. Lack of stability leads to desperately tight muscles and low back pain.
But it does not have to be this way! You can get the tools to start rebuilding your core today. The Tummy Team family series Low Back Pain Relief and the Elusive Neutral Pelvis series will give you strategies to help you address not just the pain and the ultimate cause too.
4.) Sacro-iliac Pain/Instability
The pelvis is where the core connects to the lower body. A strong and active core wraps completely around the pelvis to hold it stable and symmetrical. A weak and inactive core directly impacts the stability in the joints of the pelvis and can lead to sacro-iliac pain/instability. The sacroiliac joint is where the pelvis connects to the spine. The ligaments and joint capsules that support this joint are often not strong enough to stabilize the pelvis without a solid corset muscle. As a result, there can be pain, “catching” and episodes of the back “going out” that can be debilitating.
You can increase core and pelvis stability immediately by applying some key principles we teach in Mastering Active Sitting and the Elusive Neutral Pelvis series in The Tummy Team Family plan. Ultimately your body does better with stability. We can help you get there.
5.) Rib Misalignment and Instability
The ribcage is where the core connects to the upper body. A strong and active core wraps completely around the ribcage to hold it stable and symmetrical (similar to the pelvis). An inactive core combined with upper body compensation patterns can pull ribs out of alignment. This leads to sharp pain with deep breaths and difficulty moving the arms and upper body.
Functional Core Strength is the answer. You can start building this strength in our Initial Activation of the Core series and then work on improving your upper body alignment with our Upper Back Pain Relief Series.
6.) Urinary Incontinence
The pelvic floor muscles make up the floor of the core. Imagine the core as a cylinder, the diaphragm is the roof and the pelvic floor muscles are the floor. Functional core weakness that leads to the “deflated balloon” presentation of the core allows extra pressure to fall into the pelvic floor. A weak core is almost always connected to a weak pelvic floor. As a result, the bladder and the sphincters that help control your bladder are less supported allowing leakage when the body is stressed or the bladder is full.
You do not have to settle for these embarrassing accidents. We can help you right away with our Leakage: Urinary Incontinence 101 series and our Functional Pelvic Floor (not kegels) series in the Tummy Team Family plan.
7.) Pelvic Organ Prolapse
Functional core strength includes having the strength in internal muscles to support the organ in your pelvis. All day weakness can give gravity the opportunity to allow pelvic organs to drop lower in the pelvis. When core strength is required for lifting and carrying but when the core is weak our body compensates with bracing and breath holding. These strategies place undo pressure down into the pelvic floor contributing to prolapse symptoms.
When you know better you can do better. Our Prolapse 911 series will help you get to the root of this issue and combined with our Initial Activation of the Core series will start you in the right direction to addressing any prolapse issues.
8.) Neck Pain
Every muscle in the body has an optimal alignment where it works efficiently and pain-free. When the core is weak, the body tends to round forward and collapse into a “C” shape. This places the head too far forward and requires the muscles around the neck to fight to basically keep your head from falling off your body. Constant strain results in that nagging neck pain as well as upper shoulder tension, jaw issues, and headaches.
Functional core rehab can dramatically improve neck alignment and neck pain. You can start today with our series on Optimal Alignment for Core Strength and then follow our Upper Back Pain Relief series in The Tummy Team Family Plan
9.) Fallen Arches
Yes, your core not working well can affect even your feet. There is a chain reaction throughout your body when the muscles designed to hold you up and hold you together are failing to do their job. One way this can look includes your torso rounding forward, causing you to tuck your tail and collapse into your hips. Then your butt muscles become tight and cause your hips to externally rotate (making you walk a bit like a duck). Your feet, as a result, receive too much pressure to the internal portion of your arch instead of evenly throughout the foot. Gradually the arches of your feet start to give under that strain.
Once again, rebuilding your core muscles will help. The muscles need to know what alignment they work best in first and then we build daily strength. You can get started with our Optimal Alignment for Functional Core Strength series and get even more tools in our Elusive Neutral Pelvis series.
10.) Hip Pain
The hip joints are impacted by the alignment of the pelvis. The alignment of the pelvis is impacted by the functional strength of our core. As one system fails to do its job, other areas are directly impacted. It is not uncommon to have sore achy hips, “clicking” in your hips, or even chronic hip stiffness as a result of functional core weakness.
The Tummy Team can help your hips but helping your core. It starts with improving how you are sitting in our Mastering Active Sitting series and then we would have you connect to that lower core and pelvic floor muscles in our Functional Pelvic Floor (not keels) series.
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Your Body Can Work FOR You—Not Against You!
Pain, weakness, and instability don’t have to control your life. By addressing your core strength, you can fix the root cause of your discomfort and reclaim your body’s full potential.
Don’t ignore the signs—take action now! Explore our proven programs, choose the membership that fits your needs, and start your journey to a stronger, pain-free life today.
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