Mermaid
Mermaid Exercise Description
The Mermaid is a Pilates side-bending stretch performed with body weight, commonly in a “Z-sit” on the mat. It emphasizes lateral flexion of the trunk while maintaining an elongated, neutral spine. Primary tissues targeted include the latissimus dorsi, external and internal obliques, quadratus lumborum, and the intercostal muscles along the rib cage. The movement also reinforces upright alignment, controlled breathing, and shoulder blade (scapular) control as the arm arcs overhead. With simple setup and clear alignment cues, it suits most experience levels and can be modified by changing the seated position or using a cushion to keep the pelvis neutral and both sit bones grounded.
- Muscle Groups: Abs, Core, Lats, Obliques
- Target Muscles: Latissimus Dorsi, Quadratus Lumborum
- Assisting Muscles: External Obliques, Intercostals, Internal Obliques
- Stabilizing Muscles: Multifidus, Serratus Anterior, Transversus Abdominis, Trapezius - Lower Fibers
- Body Area: Upper Body
- Body Parts: Back, Core, Lower Back, Mid Back, Torso
- Body Surface: Back, Side
- Body Symmetry: Unilateral
- Equipment: Bodyweight
- Exercise Patterns: Other
- Exercise Type: Stretching
- Functional Grouping: Shoulder Extensors, Spine Stabilizers, Trunk Lateral Flexors
- Joint Involvement: Multi-joint
- Muscle Location: Lats, Side Lower Back
- Movement Direction: Lateral
- Muscle Position: Lateral, Posterior
- Gender: Female
How To Do The Mermaid Exercise
‘- Sit in a Z-sit: one shin forward, the other folded behind. Stack ribs over pelvis and lengthen through the crown.
– Place the hand on the mat beside the hip on the side of the folded legs; relax the shoulder away from the ear.
– Reach the opposite arm overhead, palm facing inward; gently depress and stabilize the scapula.
– Inhale to grow tall; exhale to side-bend toward the support hand, sliding it away as needed.
– Keep the opposite sit bone heavy; avoid twisting the torso or collapsing through the waist.
– Create an even arc from fingertips through side ribs to hip; keep the supporting shoulder packed and elbow soft.
– Breathe into the lateral ribs at end range; pause without forcing the stretch.
– Return to tall by drawing the rib cage back over the pelvis with controlled oblique engagement.
– Switch sides. If hips or knees limit position, sit cross-legged or on a cushion to maintain neutral alignment.
Mermaid Tips
‘- Stack your ribs directly over your pelvis and lengthen through the crown before you start bending.
– Relax the supporting shoulder away from your ear when placing the hand on the mat.
– Reach the opposite arm overhead with the palm facing inward and gently depress/stabilize the scapula.
– Inhale to “grow tall” first, then exhale as you side-bend toward the support hand.
– Slide the support hand away only as needed to allow the side-bend.
– Keep the opposite sit bone heavy on the mat throughout the bend.
– Avoid twisting your torso or collapsing through the waist; aim for a smooth side bend.
– Create an even arc from fingertips, through the side ribs, down to the hip.
– Keep the supporting shoulder “packed” with a soft (not locked) elbow.
– At end range, breathe into the lateral ribs, pause without forcing, then return to tall by drawing the rib cage back over the pelvis with controlled oblique engagement.
– If hips or knees limit the Z-sit, sit cross-legged or on a cushion so you can maintain neutral pelvic alignment and grounded sit bones.
Mermaid Beginner Introduction
The Mermaid is a Pilates side-bend done on the mat using only bodyweight, usually in a Z-sit with one shin in front and the other angled behind. This gentle, flowing movement highlights a long, lifted spine as the torso arcs to the side. It brings attention to the side abs, core, lower back, and rib muscles, while also involving the upper back and shoulders as the top arm sweeps overhead.
Throughout the exercise, the shape of the body forms a smooth curve from fingertips through the side of the ribs down toward the hip, emphasizing length more than depth of stretch. There is a strong focus on steady, controlled breathing, especially into the sides of the ribcage, and on how the shoulder blades glide and stabilize as the arm moves. The seated position can be adjusted, such as sitting cross-legged or on a cushion, so the pelvis feels balanced and both sitting bones can rest evenly, making this side-bending stretch accessible to a wide range of Pilates practitioners.