Overview
The prone extension family — Swan on the Reformer, Breaststroke, and Rocking — strengthens the back extensors and opens the chest, balancing all the flexion work in a session. It is also the go-to family for clients who need to avoid loaded flexion (see the Osteoporosis Protocol guide). These are advanced exercises: the lift comes from the upper back, never the neck.
The series:
- Swan on the Reformer: prone on the long box, hands on the footbar — press the carriage out to a long line, then as it returns, extend the spine and lift the chest into a controlled arch.
- Breaststroke: prone on the long box with the chest just off the front edge, holding the straps — pull the straps back and up like a breaststroke, lifting the chest while the pelvis anchors into the box.
- Rocking: prone on the long box, holding the ankles with the knees slightly apart — lift the chest and legs and rock forward and back over the box with control. The most advanced of the three; keep the rock small.
Setup
- Swan: a medium-strong setting (in our reference ladder: 1 Red or 2 Blue); footbar high. Hands on the footbar shoulder-width apart, legs extended with slight external rotation.
- Breaststroke: medium-strong (1 Blue or 1 Red); footbar high. Straps in hand, arms extended forward and down.
- Rocking: medium-strong (1 Blue or 1 Red); footbar high. Reach back and hold the ankles, knees slightly apart.
Key Teaching Cues
- All three: lift from the upper back, not the neck — keep the gaze down.
- Swan: lift the abdominals off the carriage before lifting the sternum; maintain shoulder-over-wrist alignment as the carriage comes home.
- Breaststroke: anchor the pelvis into the box as the chest lifts; exhale to pull and lift, inhale to sweep forward.
- Rocking: rock only as far as the position can be held — no momentum; keep the knees together and the chest open.
Common Faults
- Leading with the chin and cranking the neck into extension.
- Hinging from the lumbar spine instead of lifting from the upper back.
- Rocking with momentum rather than control.
- Holding the breath.
Variations
- Regression: a reduced lift with the gaze down (Swan); an arms-only pull with the chest lower (Breaststroke); lift-only without rocking (Rocking).
- Progression: a full extended reach at the top of the lift (Swan); a heavier spring (Breaststroke); a larger rock arc (Rocking).
- Safety: keep the lift small and controlled for clients with lumbar sensitivity; avoid end-range extension and rocking for acute disc conditions.