The fastest way to stop a side stitch is to slow your pace, press your fingers firmly into the painful spot, and take slow, deep breaths. Most stitches fade within a few minutes once you reduce intensity. But if you’re someone who gets them regularly, a few longer-term changes can make them far less frequent.
What to Do When a Stitch Hits
A stitch usually strikes without warning, and the instinct is to push through it. That rarely works. Instead, try these techniques in combination:
- Slow down or walk. Reducing your effort level is the single most effective immediate response. If you’re running, drop to a jog or walk. If you’re cycling, ease off the resistance.
- Press into the pain. Use two or three fingers to push firmly on the sore spot, usually just below the ribs on one side. Hold steady pressure for 10 to 15 seconds while continuing to breathe.
- Breathe slowly and deeply. Shift from short, shallow breaths to long exhales. Breathing out through pursed lips can help. Some people find that grunting forcefully on the exhale relieves the tension faster.
- Bend forward slightly. Leaning your torso toward the ground while exhaling stretches the diaphragm and the tissues underneath, which can ease the cramping sensation.
- Tighten your abs. Consciously bracing your core muscles for a few seconds at a time may help stabilize the tissues causing the pain.
You don’t need to stop your workout entirely unless the pain is severe. Most people can resume their previous pace within two to five minutes once the stitch releases.
Why Stitches Happen
The medical name is exercise-related transient abdominal pain, or ETAP, and despite being one of the most common complaints among runners and other athletes, the exact cause isn’t fully settled. The leading theory is irritation of the parietal peritoneum, a thin membrane that lines the inside of your abdominal wall. During repetitive movement like running, your internal organs shift and bounce, and the resulting friction against this membrane produces that sharp, stabbing pain just under the ribs.
This explanation fits the pattern of how stitches behave. They’re more common in activities with lots of vertical motion (running, horseback riding) than in low-bounce exercise like cycling or swimming. They tend to strike on one side rather than across the whole abdomen. And they resolve quickly once the aggravating movement stops, which is consistent with friction-based irritation rather than a muscle cramp or spasm.
What Makes Stitches More Likely
Eating or Drinking Too Close to Exercise
A full stomach increases the weight and movement of your abdominal organs, which likely increases friction against that inner abdominal lining. Drinks with high sugar concentrations are particularly problematic. Fruit juice, soda, and sports drinks with heavy carbohydrate loads are all hypertonic fluids, meaning they pull water into the gut and may thicken the thin layer of fluid between your organs and the abdominal wall. This makes friction worse. The standard prevention advice is to avoid food and drinks for about two hours before exercise, and to be especially cautious with sugary or concentrated beverages. Plain water is a much safer choice close to a workout.
Poor Posture
People with increased thoracic kyphosis, a pronounced rounding of the upper back, experience stitches more frequently. A study involving postural assessments of over 150 subjects confirmed that greater upper-back curvature is associated with more frequent stitches. The connection likely relates to how spinal alignment affects the tension and movement of abdominal structures during exercise. In one early clinical observation, improving posture in children who suffered regular stitches reduced their symptoms. If you tend to hunch forward while running, consciously lifting your chest and straightening your upper back may help.
Weak Core Muscles
There’s a meaningful link between deep core strength and stitch frequency. A study comparing runners who never got stitches with those who experienced them weekly found that the stitch-free runners had significantly stronger and larger deep trunk muscles, specifically the transversus abdominis, the deepest layer of abdominal muscle that wraps around your midsection like a corset. Runners who got stitches regularly had measurably smaller and weaker versions of this muscle. The likely explanation is that a stronger core better stabilizes internal organs during movement, reducing the friction that triggers the pain.
How to Prevent Stitches Long Term
If stitches are a recurring problem, the evidence points to three practical strategies working together.
First, train your deep core. Standard crunches and sit-ups primarily target the outer abdominal muscles. To strengthen the transversus abdominis, focus on exercises that require sustained bracing: planks, dead bugs, bird dogs, and hollow holds. Pilates-style work is particularly good at targeting this muscle. Consistency matters more than intensity here, so a few minutes of core work several times a week is more useful than one heavy session.
Second, clean up your pre-exercise nutrition. Give yourself at least two hours after a meal before running or doing any high-bounce activity. If you need to drink something closer to your workout, stick to small sips of water rather than juice or sugary sports drinks. Save the concentrated carbohydrate beverages for during or after exercise when your body handles them differently.
Third, pay attention to your posture, both during exercise and throughout the day. If you spend hours at a desk, your upper back likely rounds forward more than it should. Stretching your chest, strengthening the muscles between your shoulder blades, and consciously running tall with your chest lifted can all reduce stitch frequency over time.
When a Stitch Isn’t Just a Stitch
A typical stitch is sharp and localized to one side of your abdomen, usually the right. It comes on during exercise and fades within minutes of slowing down. If your abdominal pain doesn’t follow that pattern, it’s worth paying attention. Pain that persists long after you’ve stopped exercising, spreads across your entire abdomen, comes with nausea or vomiting, or is accompanied by chest tightness, dizziness, or unusual shortness of breath could signal something unrelated to a stitch. Recurring pain in the same spot that shows up even at rest is also worth investigating. A standard stitch, while annoying, is harmless and temporary. Pain that breaks those rules deserves a closer look.