The more interesting question isn't "Why is one shoulder higher?" It's "Why has your body organized itself this way?"
Why the question is interesting
This is a question I almost never answer directly — not because shoulders don't matter, but because I've spent a long time resisting the idea that there's one tight muscle or one clean cause behind it.
What commonly gets assumed
That an elevated shoulder has a single, findable culprit — usually a habit. Carrying a bag on one side, carrying a child, driving, always reaching with one arm, coaching or demoing from one side, standing with weight on one leg, always crossing the same leg.
Those repeated experiences may become part of the story. But I'd never say "your shoulder is high because you carry your purse." That's too small an explanation for what's actually happening.
Relationships worth observing
The body organizes around efficiency. If one side repeatedly becomes the easier strategy, the body practices it. A higher shoulder may simply be part of that larger strategy — not a malfunction, but a habit the body has gotten good at.
A few things to notice in your own body
- Which side do you reach with, carry with, or lead with, without thinking about it?
- Does the shoulder height change depending on activity, time of day, or stress?
- What else moves differently on that same side — hip, foot, jaw, breath?