Why Does Stretching Hurt?

I’ve been thinking about why stretching has always hurt me. As far back as childhood, stretching never felt like a relief or even like a stretch. It always felt quite uncomfortable. In dance class, stretching my hamstrings or hips would feel sharp, unbearable, and even emotional. I’d look around at all the other kids who seemed normal with stretching. Some I even recall said that it felt good. I wondered what was wrong with me. Why couldn’t my body let go?

Lately, I’ve begun connecting the pain I felt while stretching to the emotional tension I carried from my childhood. Probably the strongest memory I have is my dad yelling at me while he taught me how to play a musical instrument. I was young and wanted to do well, but every lesson was filled with pressure, yelling, and the feeling of being set up to fail. My body would lock up, my breathing was out of control, my shoulders stiffened. When you’re between the ages of 9 and 12 years old, your body learns to brace like that. It became my baseline. It’s still my baseline, unfortunately.

My nervous system didn’t feel safe enough to release. My body internalized the message that letting go wasn’t safe. That staying tight meant staying in control. And so, my muscles complied.

What are the Mechanics of Stretching?

Stretching activates mechanoreceptors in the muscles and connective tissue. For most people, this sends a mild signal of tension followed by release. But for bodies wired to anticipate danger, that same input can register as threat. Instead of a feedback loop of safety, it becomes one of defense. This isn’t dysfunction. It’s adaptation.

Repeated exposure to high-stress environments during developmental years conditions the body to maintain high muscle tone. This creates long-term bracing patterns especially in postural muscles like the psoas, hamstrings, and shoulders. Since breathing was involved, this also affected my shoulders, chest, neck, and upper back. These muscles were holding unresolved fight-or-flight signals. Stretching them didn’t feel good because I wasn’t lengthening relaxed tissue. Basically, I was pulling against trauma-encoded rigidity.

Apparently, true stretching requires parasympathetic activation. This parasympathetic signaling from the vagus nerve tells the body it’s safe enough to soften. In dysregulated systems, sympathetic dominance (fight, flight, or freeze) overrides this process. Muscles stay locked. Fascia thickens. Range of motion decreases. It was hard to stretch because my nervous system wasn’t surrendering. There were already signs so early of there being an issue with my nervous system.

Something I’ve learned recently reading up on polyvagal theory is that muscle release is a neurophysiological response to perceived safety. The body won’t soften simply because you tell it to stretch. It will only let go when the nervous system shifts into a parasympathetic state, specifically the ventral vagal branch associated with calm and connection.

In a sympathetic or dorsal state, the body prioritizes survival which means it’s either bracing for action or collapsing into shutdown. In those states, stretching feels threatening, ineffective, or even painful. True muscular release occurs when the nervous system registers that the environment, and the movement itself, are not dangerous. This is why trauma-informed approaches to stretching emphasize slow pacing, consistent cues of safety, and regulation first.

Snap, Crackle, Pop

Now that I’m approaching healing from the inside out, I’m noticing shifts. There are lots of cracks and pops. It is to my understanding that these are recalibrations. It’s a sign that fascia is releasing. Joint capsules are realigning. My body is no longer resisting itself. It is beginning to feel like integration.

The snapping, crackling, and popping is often referred to as crepitus. These sounds can result from gas releasing in joints, tendons snapping over tight tissue, or fascial adhesions breaking apart after long periods of tension and immobilization. In trauma-patterned bodies, chronic bracing leads to rigid fascia and misaligned movement patterns, so as the nervous system begins to allow release, the body adjusts and when it does, its sometimes quite audible (at least this has been the case for me). These shifts may also reflect deeper emotional and neuromuscular realignment, especially during somatic unwinding. Far from being a cause for concern, these sounds often signal that long-held restrictions are starting to let go.

At this point, I still have to approach stretching sparingly. My system is re-learning trust. Too much too soon has triggered old patterns for me. Old tightness, defense, collapse. Years of survival-based holding have left my baseline dysregulated. What I feel now is my nervous system scanning for safety in every new sensation.

Conclusion

As a child, stretching always left me confused and frustrated. No matter how much I practiced, I never got more flexible. I blamed myself, assuming I wasn’t good at it or that I didn’t know what I was doing. I am now seeing this differently. My body was trying to protect itself. I was stuck because letting go didn’t feel safe.

What’s different now is the message my body is finally willing to hear now, which is that it’s safe enough to release. Safe enough to feel. Safe enough to not brace for impact. That changes everything.

I have to say that the snap, crackling and popping I’ve been hearing has added an extra layer of ick to all of it. But healing isn’t always beautiful, I am learning.

Is stretching difficult/painful for anyone else? : r/Fibromyalgia

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