Cancer treatment asks a lot of the body — and often, just as much of the nervous system. Between appointments, side effects, uncertainty, and the sheer effort of getting through treatment, many survivors spend long stretches of time in a heightened, activated state, with very little chance to fully rest. Restorative poses like Supported Fish are built for exactly that gap. Unlike an active practice, restorative yoga asks for no effort at all — props do the work, and the body is given permission to simply be held, for minutes at a time. That’s not indulgence; it’s a different kind of practice, with a different physiological purpose.
Special Benefits
- Increases range of motion in the chest muscles
- Improves breath fluidity and awareness through chest opening
- Supports the body’s shift into a parasympathetic, rest-and-repair state
- Deep relaxation through gentle, full support
- Eases pressure on the low back and sacrum when the knees are guided together
Practice Level: All Levels
Props needed: Two blocks, two blankets, optional eye pillow
Setup
Place one block horizontally across the mat on the lowest level, and a second block about twelve inches behind it, at the head end of the mat, on the medium level (this can always be raised to the high level later if you need more height). Set a folded blanket on each side, at the head end of your mat. Keep the eye pillow within reach.
Sit in the center of the mat. Bend your knees, place the soles of your feet on the mat, and begin lowering back onto your elbows. Rest the bottom tips of your shoulder blades — around the bra-strap line — on the low block: not too close to your waist, and not close enough to touch your shoulders. Support the back of your head (not your neck) with the higher block, adjusting its position as needed.
Why the Shoulders Stay Unsupported
This is the part that makes the pose work, especially if you don’t have much range of motion in your chest or shoulders: your shoulders themselves should have no support at all — let them release into open space above the block. That’s what allows the chest to open gradually and safely, without forcing anything.
Why Restorative Poses Like This Support the Nervous System
Restorative poses work differently than active practice, and that difference is the point. Long, supported stillness paired with slow, steady breath is one of the clearest ways yoga engages the parasympathetic nervous system — the body’s “rest and digest” state, as opposed to the sympathetic “fight or flight” state most people spend too much of their day in. An exhale that’s a little longer than the inhale activates the vagus nerve, largely responsible for that shift — the same mechanism behind the Relaxation Response first described by cardiologist Herbert Benson: a measurable, physiological down-shift, not just a subjective sense of calm.
That matters for cortisol regulation too. The hypothalamic-pituitary-adrenal (HPA) axis is what releases cortisol in response to stress, and sustained relaxation practices are associated with a calmer, less reactive HPA axis over time — part of why a consistent restorative practice is linked to a more stable baseline cortisol rather than a chronically elevated one. None of this means restorative yoga treats a medical condition; it means poses like Supported Fish give the body a rare, uninterrupted stretch of time to shift out of a stress response — valuable on its own, and particularly so during and after cancer treatment, when the body spends so much time activated.
Legs and Hips
Extend your legs, or, for more low-back comfort, bend your knees and let them rest together, feet separated slightly. Because this pose is a backbend, staying in it for several minutes can put real pressure on the lower spine and sacrum — gently pressing the knees toward each other as you breathe helps ease that pressure and offers extra support through the pelvis.
Arms
Rest your arms comfortably on the floor in a cactus shape, elbows down. If your elbows reach the floor easily, try rotating your thumbs outward while keeping your elbows grounded — this small adjustment increases the stretch across your chest. Use blankets to support your arms if your elbows don’t comfortably reach the floor.
Arrange the eye pillow over your eyes. Let your body release into the support of your props — no effort needed here. Let this be a time to soften and feel nourished.
Stay for three to five minutes.
To come out of the pose, bend your knees, place the soles of your feet on the mat, and carefully roll off your props to one side, bringing yourself up to sit.
Modifications
If you feel discomfort in the low back, place a bolster or rolled blanket under your bent knees for support.
While your arms are in the cactus position, both arms should be fully supported, with the backs of your hands and forearms forming a straight line. If needed, create a wedge with a folded blanket to support the forearm and wrist at an angle. If one arm reaches the floor and the other doesn’t, prop both arms equally so the pose stays balanced.
References
- Benson, H. The Relaxation Response. 1975.
- Estevao, C. (2022). The role of yoga in inflammatory markers. Brain, Behavior, & Immunity – Health, 20, 100421.
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