Neutral spine and pelvis is the starting position for most Pilates work. Your lower back keeps its natural curve, neither arched nor pressed flat, and your pelvis sits level. STOTT Pilates teaches it as the most stable, shock-absorbing position, and uses a related position, imprint, when you can't yet hold neutral steady. Your neutral is your own: the size of the curve varies from person to person. From the side the camera can check your setup, but your exact spinal curve and pelvic tilt are hard for it to read, so the feel checks in this lesson matter most.
Level the pelvis
Lie on your back with your knees bent and your feet flat on the mat. Arms rest by your sides.
your back and head resting easily, nothing straining.
Gently rock your pelvis: tip it so your low back arches a little, then tip it the other way so your low back flattens. Keep the movement small and slow.
the pelvis rolling like a bowl tipping forward and back.
Settle between the two. Picture a triangle made by your two front hip bones and your pubic bone. In neutral it lies roughly parallel to the mat, with the pubic bone neither higher nor lower than the hip bones.
the pelvis level, neither tucked nor tipped.
Keep the natural curve
Let the back of your pelvis (the sacrum) rest heavy on the mat. Don't arch to make a curve and don't press your low back into the floor. A small space under the low back is normal, and how big it is differs between people.
a long spine with its gentle natural curve.
Check your low back. If it feels strained, ease your pelvis slightly toward the flatter (posterior) tilt. A strain-free low back matters more than getting the hip bones and pubic bone perfectly level.
no pinch or effort in the low back.
Neutral vs imprint
Learn imprint: breathe out and use your abdominals to draw your ribs and pelvis gently toward each other. Your pelvis tilts slightly back and your low back flattens a little. Your sacrum and tailbone stay on the mat. Breathe in to hold, then breathe out to return to neutral.
a slight scoop, not a hard tuck or a squeeze of the glutes.
Use neutral as your default, especially with your feet on the floor. Use imprint when your legs are lifted (for example in tabletop) and you can't keep neutral steady. As your abdominals get stronger, you can hold neutral in more exercises.
a clear home position you can find again quickly.
Feel it
Your sacrum rests heavy, your pelvis is level and quiet, and your low back is free of strain. There is a small natural space under your lower back, not a big arch and not a flat, pressed-down back. You are not gripping your glutes. Neutral is individual, so aim for your own easy middle rather than a textbook shape. From the side the app can check your setup and whether your hips stay still; it can't see your spinal curve or pelvic tilt directly.
Fix-its
- You press your low back flat into the mat Let go of the push. You don't need to press the low back all the way down. Rest the sacrum and allow a small space under the low back.
- You tuck by squeezing your glutes or crunching your abs Relax the glutes. Find neutral by rocking the pelvis and settling in the middle, not by clenching. Over-tucking this way can make you less stable, not more.
- You arch your low back to create a curve Let the sacrum sink onto the mat and soften the front ribs down. The curve should be what's left when you relax, not something you make.
- You force the hip bones and pubic bone level and your back strains Shift slightly toward a posterior tilt until the strain goes. Body shape (for example larger glutes) can make the textbook triangle an over-arched position for you.
- Your tailbone peels off the mat in imprint Make the tilt smaller. Imprint is a slight tilt; the sacrum and tailbone stay on the mat.
Drill
- Pelvic rocking: lying on your back, knees bent, rock slowly between a small arch and a small flattening of the low back, then settle in the middle. Repeat until you can find the middle without searching.
- Neutral to imprint: breathe in and hold neutral, breathe out and imprint, breathe in and hold, breathe out and return to neutral. Slow, controlled reps.
- Leg slides: from neutral, breathe in as you slide one foot away along the mat, breathe out as you slide it back. Only slide as far as your pelvis stays still. Alternate legs.
- Progression, once leg slides are steady: from imprint, lift one foot off the floor to tabletop and check that your pelvis stays still. Only try both feet when one is easy.
- Film from the side at hip height with your whole body in frame to check your setup and that your hips stay still during leg slides.
Sources
- Merrithew / STOTT PILATES — Principles: Pelvic Placement
- Studio Pilates — Pilates Basics: Understanding the Difference Between Neutral Spine and Imprinted Spine (2018)
- Suits WH — Clinical Measures of Pelvic Tilt in Physical Therapy, Int J Sports Phys Ther (2021)
Last checked 2026-10-26.