Mermaid Looks Easy Until It isn’t: What Side-Bending Is Really About
Why Mermaid Has a Reputation It Does Not Deserve
When clients watch Mermaid demonstrated for the first time, the reaction is almost always the same. It looks graceful, relatively simple, and maybe even a little relaxing. A gentle side bend, a reach of the arm, and you are done. Then they try it, and suddenly the reformer carriage is sliding when it should not, one hip is lifting off the box, and the side they are bending toward feels like it is collapsing rather than opening.
Here at Lowcountry Power Pilates Studio, our instructors see this every week across our Group Reformer classes and Private sessions alike. Mermaid is genuinely one of the most information-rich exercises in the classical repertoire, and that is precisely what makes it so worth doing correctly. The moment you understand what it is actually measuring, your relationship with it changes completely.
Length First, Then the Arc: The Principle Most People Skip
The single most important concept in Mermaid is this: you must get tall before you go anywhere. Side-bending in Pilates is not a lateral collapse. It is an arc, and an arc requires a long spine as its starting point. If you begin from a compressed, settled position, whatever range of motion you find in the bend is coming from the wrong places, usually the lower back, the ribs, or the neck, rather than from the waist and the obliques doing their actual job.
Think of it this way. Imagine a tall candlestick tipping gently to one side in one smooth curve. Now imagine a shorter, slightly crumpled one doing the same thing. The crumpled version has nowhere clean to arc from, so it just bends at its weakest point. Your spine works on the same principle. The reach of the arm overhead before the tip is not decorative. It is the mechanism that creates the length you need to make the side bend safe and effective.
This is why in Mermaid, the reaching arm and the sense of opposition between the crown of the head and the sits bones matters so much. You are essentially stacking yourself as tall as possible so that the curve, when it comes, travels through a long, organized column rather than a compressed one. The instructors here, including Catherine, Emily, Jill, Joanelle, Joyce, Kelly, Lila, and Wendy, will cue this lengthening repeatedly because it is the foundation everything else rests on.
Where the Cheats Happen and Why They Happen So Fast
The compensations in Mermaid tend to arrive immediately, meaning in the first fraction of the movement before the client even registers they have made a choice. The most common ones we see are the hip hiking off the box, the ribcage jutting forward as the arm reaches up, the head dropping toward the shoulder rather than staying level, and the bottom waist completely releasing all tone so the whole side just slumps.
Hip hiking is usually the first to show up. When the sitting bones are not equally weighted and grounded, one hip floats upward the moment the arm lifts. This shortcuts the oblique work entirely and transfers the effort into the neck and the supporting shoulder instead. Clients often do not feel this happening because the movement still feels like something, just not the right something.
The ribcage jut is the second most common pattern. As the arm sweeps overhead, the front ribs flare forward to create a false sense of length. It looks like reach, but it is actually extension sneaking in through the front of the body. A genuine Mermaid keeps the front ribs softly drawn inward even as the arm climbs, which is a very different sensation from what most people expect. Once clients feel the difference between a true long side bend and a compensated one, they often describe it as much harder but also much more satisfying. That is the work, and that is what we are here to help you find.
Bringing It Into Your Practice Here
If Mermaid is already part of your sessions with us, this week is a great opportunity to slow it down and notice what you feel before the tip, not during it. Ask yourself whether you feel genuinely taller at the top of the reach than you did in your neutral seated position. If the answer is no, or if you are not sure, that is exactly the information your instructor needs to help you.
We completed 379 sessions in the last 28 days, and in every one of them, the conversation between client and instructor is the most valuable tool we have. If you have been curious about Mermaid or feel like something in your side-bending work is slightly off, bring it up in your next session. Whether you are in a Group Reformer class, working in a Duet, or in a Private session, there is always room to take a closer look at what is really happening in your body. That is the Lowcountry Power Pilates way, and it is why this community keeps coming back.