Chronic Pain & Exercise: More Than Tissue Repair

The Questions I Get Every Week Have Nothing to Do With Your Tissue

Every week, in some form, I hear the same handful of questions. Why does my back only hurt when I bend this way, but not that way? I had a flare-up out of nowhere — did I re-injure something? If a movement hurts, should I stop doing it? Is my pain even normal, or is something seriously wrong?

Notice what none of those questions are about. They're not about a torn structure or a diagnosis. They're about deciding, moment to moment, whether to trust what you're feeling — and that decision is happening in your nervous system, not just your knee or your low back.

A narrative review published this July pulled together a decade of research (2016 to 2025) on exactly this: how exercise changes chronic pain through cognitive, emotional, and metacognitive channels — not only mechanical ones (Regazzo, Coraci, & Masiero, 2026). Translation: the tissue work is real, but it's maybe half the story. The other half is what's happening between your ears, and it explains almost every question above.

"Is This a Real Injury, or Is My Nervous System Overreacting?"

This is the most common version of the question, and it's rarely either/or. According to the 2026 review, exercise reliably reduces catastrophizing — the tendency to assume the worst about a sensation — and reshapes the beliefs people hold about what their pain means (Regazzo et al., 2026). That's not a mood trick. Catastrophic beliefs measurably change how threatening a sensation feels, which changes how much it hurts.

Here's the practical version I give clients: tissue damage signals tend to be sharp, localized, and tied directly to a specific event or load. Nervous system sensitivity tends to be diffuse, inconsistent, and disproportionate to what actually happened. Neither one means something is broken. One means “let's modify the dose.” The other means “let's build tolerance.”

"If It Hurts, Should I Stop?"

Almost every client asks a version of this — where's the line between “this hurts but I should keep going” and “stop”? The honest answer: pain during a rep is not automatically harm. Avoiding anything that reproduces a sensation is one of the most common ways people accidentally make their pain worse, because avoidance is exactly what fear of movement (kinesiophobia) runs on. The 2026 review found exercise directly attenuates kinesiophobia and improves pain self-efficacy — a person's confidence in their own ability to function despite pain (Regazzo et al., 2026). Confidence isn't a nice side effect here. It's a mechanism.

My rule of thumb: sensation that's tolerable, doesn't sharply worsen through the set, and settles within a day is a green light. Sensation that spikes, doesn't ease with rest, or comes with swelling or real weakness is a stop-and-reassess. Everything else lives in a gray zone worth talking through with whoever's programming for you — that's a conversation, not a guessing game.

"Why Did This Flare-Up Happen Out of Nowhere?"

Almost never out of nowhere. Flare-ups usually track back to load, sleep, or stress in the days before — not a fresh injury. But you can't see that pattern if you're not paying attention to it, and this is where the “metacognitive” part of the research gets practical. The review describes exercise improving people's ability to notice bodily sensations without immediately reacting to them — what researchers call decentering and non-reactive awareness, alongside reduced rumination (Regazzo et al., 2026). In plain language: exercise doesn't just change what you feel, it changes your relationship to noticing it. That's also why a lacrosse ball or a foam roller can be a genuinely useful tool — or can quietly become a “fix me” ritual that reinforces the idea that something's wrong every time you feel a twinge. The tool isn't the problem. Using it as a barometer for whether you're broken is.

Why Moving Sometimes Feels Better Than Sitting Still

This one has a name: exercise-induced hypoalgesia. A separate 2026 review lays out the mechanism — exercise engages the same descending pain-modulating pathways in your brainstem and spinal cord that your body's own opioid, endocannabinoid, and serotonergic systems use (Gajic, Kovac, Lubinsky, & Knezevic, 2026). So if your back has ever felt better five minutes into a workout than it did on the couch that morning, that's not you pushing through a warning sign. That's a real, measurable biological pain-relief system doing exactly its job.

What This Means for You

Notice the pattern, not just the pain. A flare-up tied to a bad week of sleep tells you something different than one tied to a new load — and the response is different too.

Build a real decision rule, not a guess. Tolerable, stable through the set, and resolved within 24 hours is a green light. Sharp, escalating, or lingering is a reassess.

Use self-treatment tools on purpose, not on reflex. A lacrosse ball can be genuinely useful. Reaching for it every time you feel anything is a habit worth noticing.

Trust that movement is doing more than you can see. The soreness that settles mid-set, the back that loosens up after five minutes of movement — that's your nervous system working, not you getting away with something.

None of this replaces good tissue-level programming — building capacity is still the job. But if the only thing on the table is sets and reps, you're missing half of what's actually driving the outcome. Ascension isn't in the business of chasing pain-free. We're building the kind of capacity and confidence that make questions like these easier to answer for yourself.

Sources

Regazzo, G., Coraci, D., & Masiero, S. (2026). Beyond biomechanics: a narrative review on the cognitive, emotional, and metacognitive mechanisms of exercise in chronic pain. European Journal of Translational Myology. https://doi.org/10.4081/ejtm.2026.15506

Gajic, P., Kovac, I., Lubinsky, G., & Knezevic, N. N. (2026). Exercise-Induced Hypoalgesia: Cellular and Molecular Mechanisms Linking Pain Modulation and Stress Regulation — A Narrative Review. Cells, 15(10). https://doi.org/10.3390/cells15100858