Sphinx exercise animation (Male)

Sphinx

Target muscle
Erector Spinae, Rectus Abdominis
Equipment
Body weight
Body part
Back
Type
Stretching

The Sphinx is a gentle prone spinal extension stretch that targets the erector spinae and lengthens the rectus abdominis by creating a mild arch through the lower back. Performed lying face-down and propped on the forearms with elbows under the shoulders, it requires no equipment and is widely used to relieve lower back tension, improve lumbar mobility, and counteract the effects of prolonged sitting.

How to do the Sphinx

  1. 1Lie face-down on a mat with your legs extended straight behind you, tops of the feet flat on the floor and hip-width apart.
  2. 2Place your forearms on the mat with your elbows positioned directly beneath your shoulders. Your forearms should run parallel to each other, pointing forward.
  3. 3Press your forearms and the tops of your feet gently into the mat to stabilize your lower body.
  4. 4On an exhale, press down through your forearms and slowly lift your chest and upper abdomen off the floor, allowing your spine to extend into a gentle arch.
  5. 5Keep your hips and pelvis in contact with the mat throughout the movement — do not let them rise.
  6. 6Lengthen the back of your neck and gaze forward or slightly downward to keep the cervical spine in a neutral position.
  7. 7Hold the position for 20–30 seconds, breathing slowly and deeply. With each exhale, allow the belly to relax further toward the floor.
  8. 8To release, slowly lower your chest back to the mat with control and rest briefly before repeating.

Form tips

  • Hold each rep for 20–30 seconds to allow the lumbar muscles and abdominal fascia time to fully relax and lengthen — brief holds provide little benefit for a passive stretch.
  • Breathe diaphragmatically throughout: inhale through the nose to expand the ribcage, and exhale through the mouth to soften the abdomen toward the floor, deepening the stretch with each breath cycle.
  • Keep your elbows directly under your shoulders — moving them too far forward reduces spinal extension; too far back increases compression at the lower back.
  • Engage your glutes very lightly to protect the lumbar spine and prevent excessive anterior pelvic tilt during the hold.
  • If you feel pinching or sharp discomfort in the lower back, reduce the range of motion by walking your elbows slightly forward to decrease the arch.

Common mistakes

  • Letting the hips rise off the floor: lifting the pelvis shifts the stretch out of the lower back and into the hip flexors, reducing the intended spinal extension benefit and altering body mechanics.
  • Shrugging the shoulders toward the ears: elevating the shoulders creates unnecessary tension in the neck and upper traps, distracting from the spinal stretch and potentially causing discomfort.
  • Holding the breath: breath-holding increases intra-abdominal pressure and muscular tension, actively preventing the passive relaxation the stretch requires to be effective.
  • Placing elbows too far forward: moving the elbows well ahead of the shoulders dramatically reduces spinal extension, turning the pose into more of a resting position with little therapeutic benefit.
  • Rushing through the hold: spending fewer than 15 seconds in the position does not give connective tissue and muscle enough time to lengthen — passive stretches require sustained duration to drive adaptation.

Frequently asked questions

How long should I hold the Sphinx stretch?

Aim to hold the Sphinx for 20–30 seconds per repetition, completing 2–3 reps with a brief rest between each. Passive stretches require sustained time under tension to allow the muscle and fascia to relax and elongate. Shorter holds of 5–10 seconds are too brief to produce meaningful changes in flexibility or to relieve muscular tension in the lower back.

Is the Sphinx safe for a herniated or bulging disc?

Prone extension exercises like the Sphinx are commonly included in rehabilitation protocols for posterior disc herniations because the extension position can encourage the disc to migrate anteriorly. However, individual presentations vary significantly, and what helps one person may aggravate another. Always consult a physical therapist or physician before using the Sphinx as part of a disc-related recovery plan.

What is the difference between the Sphinx and the Cobra pose?

The key difference is the degree of spinal extension and the point of support. In the Sphinx, your forearms remain on the floor with elbows under the shoulders, producing a moderate, passive extension of the lumbar spine. In Cobra (Bhujangasana), the hands press into the floor and the arms straighten, lifting the chest much higher and creating a deeper, more active spinal extension. The Sphinx is generally considered the gentler option and is preferred when lower back sensitivity is a concern.

Can beginners do the Sphinx stretch?

Yes. The Sphinx is one of the most beginner-friendly back stretches available. It requires no equipment, involves no loaded movement, and the degree of spinal extension is inherently limited by the forearm-supported position. Most people can perform it safely from day one. If you experience any sharp, shooting, or radiating pain during the stretch, stop immediately and seek guidance from a healthcare professional.

How often should I do the Sphinx stretch?

For general lower back mobility and posture maintenance, performing the Sphinx once or twice daily is a common and effective frequency — particularly in the morning or after long periods of sitting. Because it is a low-intensity bodyweight stretch, daily use carries minimal recovery cost for most healthy individuals. For rehabilitation purposes, frequency is best determined by a physical therapist based on your specific condition.

Related exercises