Ten minutes of walking before stepping onto the reformer is not warm-up filler. It is the single habit that has most consistently changed the quality of my sessions - both as a practitioner and as a teacher watching clients arrive.
Here is what I have noticed: people who come straight from a car seat or a desk chair spend the first third of a session just arriving. Their hip flexors are shortened. Their breath is shallow. They are mentally somewhere else - the parking lot, the work email, whatever they left unfinished. The apparatus does not care. It will meet them exactly where they are.
Walking, even briefly, addresses this before the session starts.
Gait requires contralateral coordination - the same cross-body patterning that Pilates reinforces in exercises like the Long Stretch or Short Box Series. When you walk, your thoracic spine rotates in opposition to your pelvis. That rotation wakes up the deep spinal muscles in a way that no static stretch replicates. By the time you lie down on the reformer, your spine is already remembering that it moves.

There is also something attentional about walking. It requires just enough focus - avoiding a curb, noticing your pace - that it pulls the mind out of task-mode without emptying it entirely. You arrive at the studio present rather than buzzed or flat.
My specific practice: I park two blocks from the studio and walk slowly. Not a power walk. I pay attention to my foot strike and whether I am holding my breath. That is the whole ritual. It takes less preparation than finding a parking spot closer to the door.
Clients who have adopted some version of this - a short walk from the lot, a few blocks from a nearby coffee shop - consistently report that the first few exercises feel more available. The Footwork goes deeper. The breath organizes faster.
Pilates training rewards preparation. Not complicated preparation - just the kind that gets your nervous system to show up before your appointment does.