Piriformis Stretch: The Best One, How Long To Hold It, And Is It Piriformis Or Sciatica?

Last updated: 25 October 2026

Piriformis stretch: the short answer

The best piriformis stretch is the lying figure-4, done with a belt so nothing is forced. Hold it 20 to 30 seconds, rest, and repeat two or three times on each side. It is very likely to ease a tight, deep buttock and is certainly worth trying, based on our experience at Flametree. A seated version on a chair suits a desk day. The muscle is small, so a gentle stretch is plenty.

This article draws on our free ebook, Happy Backs: The Gentle Iyengar Way With A Sore Back, by Chris Lalor, and on our ebook on stiffness, Too Stiff For Yoga. In short:

• The piriformis is a deep buttock muscle. It sits close to the sciatic nerve, and a tight one can press on it.
• Lying figure-4 with a belt is the best start. Your head and shoulders stay relaxed on the floor.
• Hold 20 to 30 seconds, two or three times. Short holds, repeated, are kinder than one long strain.
• A chair version works at your desk. Sit on your sitting bones, ankle over knee, and lean forward from the hips.
• Sitting is the slow cause. It builds for years, so cut the hours as well as stretching.
• Buttock pain can be piriformis or sciatica. The first steps are the same gentle ones.

A quick word on Iyengar yoga. Iyengar yoga is the style developed by Mr BKS Iyengar. He pioneered the use of props such as chairs, belts and bolsters (firm, long cushions). It is the style we teach at Flametree, in Darwin and live online. Props are why a tight buttock can be stretched without being forced.

What is the piriformis, and what is piriformis syndrome?

The piriformis is a small, deep muscle in the buttock. It runs from the base of the spine to the top of the thigh bone, and it helps turn the leg outward. It lies close to the sciatic nerve, the big nerve that runs from the lower back, through the buttock and down the leg. The American physical therapist Rachel Krentzman notes that tight buttock muscles can press on that nerve.

When a tight piriformis irritates the sciatic nerve, the result is often called piriformis syndrome. Pain shows up deep in the buttock, and can run down the back of the leg.

Stuart, who runs Flametree with Chris, knows this first hand. After a Bali retreat he spent 11 hours in a taxi in one day. Before the trip he had done many 8 to 11 hour days at his computer, with less yoga than usual. In the taxi, a sharp pain struck high in his thigh. His piriformis had had enough, and it went on to irritate his sciatic nerve, with pain down his right leg. Back in Darwin, he could only lie on his stomach for a day. Chris had him doing a simple piriformis stretch straight away. He says the poses worked, though it took time. The taxi was only the occasion. The sitting had built up for years.

What is the best piriformis stretch, and how long should you hold it?

The best piriformis stretch is the lying figure-4 with a belt, held for 20 to 30 seconds and repeated two or three times on each side. Thirty seconds is a sensible hold. In a 1994 American trial of 57 people with tight hamstrings, 30 seconds of stretching worked as well as a full minute, and both beat 15 seconds or none. A 1997 trial of 93 people found the same. Those trials tested hamstrings, not the piriformis, so use them as a guide. Researchers also report that most of the slow lengthening in a stretched muscle happens in the first 15 to 20 seconds. So go in, hold, come out and go in again.

1. Lying figure-4, with a belt

Lie on your back with your knees bent and your feet on the floor. Cross your right ankle over your left thigh, just above the knee, and keep the right foot flexed. Loop a belt round your left thigh, hold both ends, and draw the left knee gently toward your chest. Your head, neck and shoulders stay down and soft. You should feel a stretch deep in the right buttock. Hold 20 to 30 seconds. Breathe out and let the right knee drift away from you. Rest, repeat, then change sides. The belt lets the arms stay long and the neck stay easy, so you are stretching your buttock and not straining your shoulders.

2. Seated piriformis stretch, on a chair

Sit on your sitting bones, not your tail. Here Chris sits tall on a block. At your desk, a chair does the same job.

Sit near the front of a chair, on your two sitting bones. Cross your right ankle over your left knee, with the right foot flexed. Lengthen your spine first, then lean forward from the hips, not from the back. Rounding the lower back to reach takes the stretch out of the buttock. Margaret Martin, a physiotherapist, advises bending from the hips. Stay 20 to 30 seconds, come up, and repeat. This is a good choice for a seated stretch at work.

3. A crossed-leg twist, lying down

A lying twist with the legs folded and crossed. Breathe out and let the legs sink, arms wide.

Lie on your back with your knees bent, then cross one leg over the other and let both knees fall to one side, with your arms wide. Breathe out and let the weight of the legs sink toward the floor. Hold 20 to 30 seconds and change sides. This twists the lower back gently and stretches the outer hip. If the lower back complains, put a bolster under the knees.

And a gentle hip stretch for a sore day

When the buttock is very sore, begin with Reclining Big Toe Pose II, the simpler version. Lie down with a belt round one foot and let that leg rest out to the side on a bolster. Geeta Iyengar wrote that this pose “soothes the nerves around the hips”. Hold 10 to 20 seconds, then repeat on the other side. See our page on sciatica stretches for the steps, with pictures.

Is deep buttock pain piriformis or sciatica, and what eases it?

It can be either, and the two can feel alike. Sciatica starts in the back or the pelvis. A nerve is irritated there, and the pain travels all the way down the leg, so it seems to float around. Mr Iyengar described it as a sharp pain from the lower back into the leg and foot, “like an electric shock”. Piriformis pain sits deeper in the buttock, and the muscle can irritate the same nerve. Stuart’s case began in the muscle and ended in the nerve.

We cannot tell you which one you have from a page, and you do not have to know to start. The first steps are the same gentle ones. Rest first, then a lying stretch with a belt, then the standing poses when it settles. The ebook says the same thing for sciatica: when it is bad, supported lying poses and no rushing into standing poses.

What eases it for good is the sitting. Two ideas from our ebooks help.

• Sit on your sitting bones, not your tail. Leslie Howard, an American teacher trained in the Iyengar tradition, says that “ten times out of ten” the person is sitting on her tail. The buttock muscles tend to switch off in a permanent tuck. “A tight muscle is not a strong muscle,” she writes, and a buttock that clenches all day is not doing its job either.
• Add up your sitting. The American coaches Kelly and Juliet Starrett suggest a sitting inventory: add up the hours you spend in a chair, a car seat or on a couch. Their sample day comes to about 12 hours. Their goal is six hours or fewer. Stuart also bought a desk he could raise, so he could stand to work.

Strong legs and hips help too. Every Flametree class starts standing, so the legs and hips carry the body and the back does not have to. For more on hips, read Yoga For Hip Pain and Desk Yoga.

What should you avoid with a tight piriformis?

Avoid hard pulling, bouncing and long strained holds. A good stretch is a stretch, not a stab. Mr Iyengar drew the line this way: “Pain is unbearable; a stretch is bearable.” Good pain comes with a feeling of relief and stops when you come out. Bad pain is sharp and is still there afterwards, so stop and change the pose. Held stretches also gave more lasting range than bouncing ones, in a 2024 review of 77 stretching studies. Lifting both legs together waits, as Geeta Iyengar advised for backs.

Where can you learn a piriformis stretch in Darwin?

Flametree runs a Yoga For Backs class on Wednesdays at 7.15pm at our Woolner studio, in the studio only. Most of our beginner classes suit tight hips and buttocks too, because every class is adjusted to the people in the room. If you want a piriformis stretch in Darwin shown on you, with a belt and a chair set out, a teacher can do that in class. You can also join us live online from anywhere in Australia.

If your pain is new or severe, came after a fall, or comes with numbness or weakness, tell your teacher before class. Feel free to check with your professional advisers if you wish, but also give yoga a try.

Frequently asked questions

What is the best piriformis stretch?

The lying figure-4 with a belt. Cross one ankle over the opposite thigh, loop the belt round that thigh and draw it toward your chest, with your head and shoulders down. Hold 20 to 30 seconds and repeat two or three times on each side.

How long should you hold a piriformis stretch?

Twenty to thirty seconds, repeated two or three times. A 1994 American trial of 57 people found 30 seconds as good as a full minute for tight hamstrings. It did not test the piriformis, so we use it as a guide.

Is it piriformis or sciatica?

It can be either, and the two can feel alike. Piriformis pain sits deep in the buttock, and the muscle can irritate the sciatic nerve. Sciatica starts in the back or pelvis and travels down the leg. The gentle first steps are the same: rest, then a lying belt stretch.

What is piriformis syndrome?

It is the name often given when a tight piriformis muscle irritates the sciatic nerve. The pain sits deep in the buttock and can run down the back of the leg. A tight buttock muscle can press on that nerve.

Can I stretch the piriformis at my desk?

Yes. Sit on your sitting bones, cross one ankle over the other knee and lean forward from the hips with a long spine. Hold 20 to 30 seconds. Stand up often as well, since long sitting builds the problem.

Why does my piriformis keep coming back?

Often because the sitting has not changed. In Stuart’s case the sitting had built up for years, and the taxi was only the occasion. Cutting sitting hours and sitting on your sitting bones are part of the fix, along with the stretch.

Should I stretch a sore piriformis hard?

No. Go gently and stop at a stretch, not a stab. Bad pain is sharp and stays after you come out. Mr Iyengar said that a stretch is bearable and pain is unbearable.

Where can I learn a piriformis stretch in Darwin?

Our Yoga For Backs class runs on Wednesdays at 7.15pm at the Woolner studio. Our beginner classes, in the studio or live online, also suit tight hips. Start with the half price 10 class pass.

For the bigger buttock muscles, see our glute stretches, which use forward folds, Triangle and a knee-to-chest stretch.

Where to next

• New to yoga, or coming back? Start with our half price 10 class pass with 2 classes free, in Darwin or live online.
• Want to see class times first? Look at the beginner timetable.
• Want the whole story on a sore back? Read Yoga For Sore Back: What Helps, Free Ebook, Darwin.

Flametree Yoga Studio, Darwin and live online. This article is general information, not medical advice. Feel free to check with your professional advisers if you wish, but also give yoga a try.

Sources: Chris Lalor, Happy Backs and Too Stiff For Yoga (Flametree, 2026); Bandy and Irion, Physical Therapy, 1994, 57 people (doi); Bandy, Irion and Briggler, Physical Therapy, 1997, 93 people (doi); a 2024 review of 77 stretching studies; Rachel Krentzman, Yoga for a Happy Back (2016); Leslie Howard, Pelvic Liberation (2017); Kelly and Juliet Starrett, Built to Move; Margaret Martin, Yoga for Better Bones; Geeta S Iyengar, Sydney 1996; BKS Iyengar, Sparks of Divinity (1971). Full references are in the Happy Backs and Too Stiff For Yoga ebooks.