Stiff Joints And Yoga: What Mr Iyengar, The Yoga Doctors And The Research Say

Do your joints creak when you get out of bed, or out of the car? Stiff joints and stiff muscles creep up on most of us, a little each year, until bending to tie a shoelace feels like work. The great yoga teachers and the medical doctors who worked with Mr BKS Iyengar agree on what to do about it: keep the joints moving, steadily and with support. This guide brings together what each of them says about stiffness and losing flexibility, and what modern research has found. Last updated: 31 October 2026.

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Stiff joints and yoga: the short answer

Can yoga help stiff joints? Yes. Yoga loosens stiff bodies, at any age. Across reviews of more than 20 trials in people over 60, yoga improved flexibility, balance and leg strength. In knee arthritis, yoga eased stiffness, and in one large trial it cut morning stiffness more than physiotherapy exercises did. Range starts to come back within weeks, not years. Mr Iyengar built his method around props so a stiff body can work safely, and the yoga doctors explain why it works: held, steady stretches teach the nervous system to let go.

One thing to keep in mind as you read: most trials tested “yoga” of many styles, taught by teachers with very different training. The trials that tested Iyengar yoga specifically, taught by trained Iyengar teachers, found it helped too, and in our view well-taught Iyengar yoga is likely to go further than the average. Why the kind of yoga matters.

The bottom line: five key moves for stiff joints

1. Go to a yoga class at your level, two or three times a week. The programmes that loosened people ran for 8 to 12 weeks, so give it time. More is better.
2. Hold, don’t bounce. Steady, held poses with props are the safest way to gain range, and they are what Iyengar yoga is built on.
3. Stop sitting still for long. Inactivity adds stiffness, and stiffness makes us move less. Get up, stretch out and keep the joints moving through the day.
4. Add breath work (pranayama). It calms the mind and the nerves. How far you can stretch depends a lot on how much your nervous system will allow, and a calm system lets go more easily.
5. Start now. New to Flametree, or away 3 months or more? 2 free classes, then 10 at half price, in Darwin or LIVE online.

Iyengar yoga is the style we teach at Flametree. During the 20th century, Mr BKS Iyengar was the major person who codified traditional Indian yoga, through his seminal books and widespread teaching. He also pioneered the use of props, so poses can be adapted to almost any body. His style is sometimes called modern classical yoga. This guide is part of our encyclopaedia of yoga for health conditions.

This guide in short

• Mr BKS Iyengar: props let a stiff body work without strain; standing poses and back bends build flexibility. But he also warned that a very supple body can lose touch with itself.
• Geeta S Iyengar: do not despair; keep practising and elasticity comes in due course. Strength counts more than suppleness.
• Dr Timothy McCall: yoga takes each joint through its range. Use it or lose it.
• Dr Loren Fishman: the right kind of movement is a stiff joint’s best friend.
• Dr Krishna Raman: be like the willow, not the oak. Steady stretches, never bouncing.
• The research: 22 studies listed below, from small Iyengar trials to reviews of 22 trials.
• For men: men are stiffer on average, lose range faster, and do far less yoga.
• Take it further: a free ebook, Too Stiff For Yoga?, and classes in Darwin and online.

“My body had become so stiff that I could hardly bend down”

What stiff joints are, and why we stiffen

Joint stiffness is the feeling that a joint will not move as far, or as freely, as it used to. It is often worst first thing in the morning or after sitting for a long time. Four things set how far a joint can move:

• The muscle and its tendons.
• The joint capsule, the tough bag that wraps each joint.
• Fascia, the connective tissue that wraps muscles and links them.
• The nervous system, which acts as a guard and decides how much stretch it will allow.

That last one matters most early on. Most of the range people gain in the first weeks comes from the guard relaxing, not from muscles getting longer. So stiff muscles are usually guarded muscles, not short ones. And feeling stiff is not always the same as being stiff: a cold, tired or anxious body feels stiffer than it is.

How fast do we lose flexibility with age? Slowly. In a study of 6,000 people aged 5 to 92, a whole-body flexibility score fell by about 0.6% a year in women and 0.8% a year in men. Shoulders and the trunk lost the most; elbows and knees held up best. In another study of people aged 55 to 86, age explained only 8 to 10% of the differences in shoulder and hip range between people. So age is a small part of the story.

“An iron gets rusted if it is not used.”

What Mr BKS Iyengar taught about stiffness

In short: keep moving, use props so nothing is forced, and value the feedback that stiffness gives you.

Mr Iyengar knew stiffness from the inside. He wrote of a body so stiff he could hardly bend down, and in old age he said, “When I was young, I played. Now I stay.” In Yoga: The Path to Holistic Health he sets out a yoga approach for 72 health conditions, and stiffness runs through many of them. His ideas, in our words:

• Props make it possible. Props let the less flexible practise without strain or injury, and let older students reach poses with less effort. He did not want props used forever, only as long as they help (pp. 23 to 24, 31 to 32).
• Active poses build flexibility. Supported, passive practice is for calm and patience. Active practice, mainly standing poses and back bends, is the one he names for building flexibility (p. 181).
• Break the vicious circle. For the hip, he describes how pain cuts movement and inactivity adds stiffness. The answer is to keep the joint moving and the muscles working (p. 334).
• Work from the edges in. Build strength around a stiff or sore area first, then work towards it (p. 263).
• Morning stiffness. He names morning stiffness, tiredness and swollen joints in rheumatoid arthritis, and gives a more restful course for it (p. 340).
• His claim for the poses: in his words, asanas “lubricate joints, and increase mobility” (p. 262). Of Hero Pose (Virasana), he says it eases stiffness in the joints (pp. 104 to 107).

We do not publish his sequences. A sequence needs a teacher who can see your body and adapt each pose, which is what a class is for.

Supple is not the goal

Here is the surprise. Mr Iyengar did not think the most flexible student was the best off. In “The Supple and the Stiff Body” (Yoga Wisdom and Practice, p. 81) he says a stiff body pushes back, and that push-back gives the mind something to study. A very supple body can slide into a pose without that response, which he called “an asana without life”. So the aim is not the most range. It is range you can feel, control and hold evenly. In our view, that is good news for anyone who thinks they are too stiff for yoga: you already have the best teacher in the room.

“A rigid body has resistance, action, and counter-action”

What Geeta S Iyengar said

In short: stiffness yields to steady practice, and strength matters more than suppleness.

Geeta S Iyengar, Mr Iyengar’s daughter, taught for decades alongside him in Pune and wrote Yoga: A Gem for Women. Her points, in our words:

• Do not despair. If a pose eludes you, keep practising, and elasticity comes in due course.
• The spine loosens. In the beginning the spine is stiff, she wrote of the twists, but with practice it becomes flexible.
• Strength counts most. In a Sydney class in 1996 she said suppleness does not count; organic strength does.
• Accept the age of the body. She said one has to accept that the body has become a little older, and work with it rather than against it.
• Never force a stiff student. In the teachers’ guidelines she wrote with her father, stiff students are not forced, and never ridiculed.

“…age, flexibility are not the qualities of eligibility to do yoga.”

What Dr Timothy McCall says

In short: yoga takes each joint through its full range, and a joint that is used stays usable.

Dr McCall is a US medical doctor and yoga therapist, author of Yoga as Medicine and former medical editor of Yoga Journal. Stiffness is not one of the 117 conditions on his June 2019 list; the nearest are osteoarthritis (no. 68) and rheumatoid arthritis (no. 97), where stiff joints are a main complaint. His book has no chapter on stiffness itself, so we draw only on his arthritis chapter:

• Yoga moves joints through their range. That is his general case for yoga and the joints.
• Use it or lose it. Cartilage has no blood supply of its own. Movement pumps joint fluid through it, which is how it is fed. A joint kept still goes hungry.
• Habits matter. Alignment, posture and movement habits all drive wear in the joints, and all are things yoga trains.

Our arthritis guide sets out his chapter in full.

What Dr Loren Fishman says

In short: the right kind of movement is a stiff joint’s best friend.

Dr Fishman is a New York rehabilitation physician on the Columbia University medical faculty, who spent a year in Pune with Mr Iyengar. In his book Yoga for Arthritis, written with yoga therapist Ellen Saltonstall, his views, in our words:

• A large range, gently. Yoga uses a large range of motion while looking after the joints, without the pounding of many sports.
• The right movement. Movement is the best friend of a stiff, arthritic joint, provided it is the right type of movement.
• Props: walls, chairs and blocks keep stiff joints moving without strain.

“continue the practice and elasticity will be achieved in due course.”

What Dr Krishna Raman says

In short: be the willow, not the oak; stretch steadily, never by bouncing.

Dr Raman is a Chennai physician who trained in yoga under Mr Iyengar. His question-and-answer book on yoga and medical science covers stretching, ageing and the joints. His views, in our words:

• The willow, not the oak. Older people should aim to bend like the willow. Props give them confidence and an easy way in (Q49).
• Hold the stretch. Static, held stretching is the safest kind, and it is what yoga follows. Bouncing stretches, and contract-and-relax methods, are not advised.
• Graceful ageing. Yoga cannot stop ageing, but it makes ageing graceful (Q14, Q15, Q20).
• Hamstrings and twists. Hamstring stretches and twists are particular to the Iyengar school (Q466).
• Do not lock the knees. The thigh muscles should support the joint (Q133).
• The flexible need care too. Very flexible people can overstretch, for example in the groin (Q6).

“Suppleness does not count. The organic strength counts.”

Other yoga voices on stiffness

• Stiff as a board by midlife, then movement came back. Chris Lalor, Certified Senior Iyengar Yoga Teacher and certified Yoga Therapist, was a school athlete. Years of lifting heavy pots at her plant nursery left her “stiff as a board”. Yoga gave the movement back. Read Chris’s story of starting yoga stiff.
• Looser at 70 than at 20. Stuart, yoga teacher, Flametree Yoga Darwin, puts his palms flat on the floor in a forward bend, further than he could in his early 20s. It was not a straight line: in midlife he swapped yoga for swimming, and his stiffness got much worse. Coming back to yoga turned it around.
• Too stiff to start is the reason to start. Our free ebook Too Stiff For Yoga? sets out why stiff bodies change with steady practice, with stories from our students.

“Rigidity makes us brittle and causes us to lose our balance.”

What the research shows

In short: yoga improves flexibility in older adults, eases stiff arthritic joints, and starts to work within weeks. So if you want to know how to improve flexibility, the trials give a clear answer: regular yoga, held steadily, for 8 weeks or more. Most of these studies tested yoga in general, of many styles. The Iyengar yoga trials are listed on their own below. Why the difference matters.

Yoga, flexibility and mobility

• Yoga improved lower-body flexibility, balance and leg strength in older adults, and beat other active exercise for flexibility. Sivaramakrishnan 2019, a review of 22 trials in adults averaging over 60. Read the study.
• Yoga improved flexibility, balance and strength in people over 60. Ko 2023, a review of 15 trials. Read the study.
• Yoga gave a medium gain in physical mobility and a small gain in balance. Youkhana 2016, a review of 6 trials and 307 people aged 60 and over. Read the study.
• Older women who did yoga gained range in the shoulder, spine, hip and knee: bending forward at the lower back rose about 51% and hip bending about 36%. Goncalves 2011, a controlled study of 83 women aged about 67 to 69. Read the study.
• Twelve weeks of weekly yoga improved lower back and hamstring flexibility in both men and women, along with fitness and strength. Lau 2015, a controlled trial of 173 adults averaging 52, in Hong Kong. Attendance was 94%. Read the study.
• Daily yoga for 60 days improved low back and hamstring flexibility in computer users and eased their discomfort, while the waiting group’s discomfort rose. Telles 2009, a trial of 291 office workers. Read the study.
• Yoga improved spinal flexibility, especially in people with long-term low back pain. Rathore 2024, a review of 8 studies. Read the study.
• Body flexibility rose 3.9 cm at 4 weeks and 8.9 cm at 8 weeks, and shoulder range improved. Kongkaew 2018, a review of 7 trials of a traditional Thai form of yoga exercise. Read the study.

Iyengar yoga studies

These trials tested Iyengar yoga specifically, or a programme built on it, taught by trained Iyengar teachers, with props and adapted poses.

• Iyengar yoga improved standing balance, the time to rise from a chair and walking speed, with no serious adverse events. Twelve weeks, twice a week. Tiedemann 2013, a trial of 54 people averaging 68, in Sydney. Read the study.
• Gentle Iyengar yoga increased how far the hip opened behind the body when walking, and lengthened the stride. More home practice went with bigger changes. Eight weeks. DiBenedetto 2005, a study of 23 healthy people aged 62 to 83. Read the study.
• Adapted Iyengar yoga lowered knee pain and improved function, and stiffness scores trended the same way. Eight weekly classes. Kolasinski 2005, a small knee osteoarthritis pilot. Read the study.
• A yoga programme based on Iyengar yoga improved finger range of motion and eased hand pain during activity. Eight weekly sessions, compared with no programme. Garfinkel 1994, a hand osteoarthritis trial. Read the study.

Stiff, arthritic joints

• Yoga cut morning stiffness more than physiotherapy exercises did. Integrated yoga (movement, poses, breathing, relaxation and meditation). Ebnezar 2012, a trial of 250 people with knee osteoarthritis. Read the study.
• Yoga was linked with less knee stiffness than both exercise and non-exercise comparisons. Lauche 2019, a review of 9 trials and 640 people, mainly with knee osteoarthritis. Read the study.
• Eight weeks of yoga improved stiffness and pain scores more than a waiting list, with no adverse events. Cheung 2014, a trial of 36 women averaging 72, with knee osteoarthritis. Read the study.
• Yoga improved physical health and walking, and flexibility improved within the yoga group. At 8 weeks, flexibility was similar in both groups. Moonaz 2015, a trial of 75 inactive adults with rheumatoid arthritis or knee osteoarthritis. Read the study. Note: this was yoga in general, not Iyengar yoga, which has not yet been tested in this group. Why it matters.

Why stretching changes range

• Regular held stretching raised stretch tolerance and lowered overall stiffness, while muscle fibre bundles did not get longer. Ingram 2025, a review of 65 studies and 1,542 adults. Read the study.
• Five of six studies found less pain after regular stretching. Konrad 2025, a review of 6 studies and 658 people with muscle and joint pain. Read the study.

How flexibility changes with age

• Whole-body flexibility fell slowly: about 0.6% a year in women and 0.8% a year in men, with women more flexible at every age. Medeiros 2013, a study of 6,000 people aged 5 to 92. Read the study.
• Shoulder and hip range fell about 5 to 7 degrees a decade, and age explained only 8 to 10% of the differences between people. Stathokostas 2013, a study of 436 people aged 55 to 86. Read the study.

Breathing practice (pranayama), meditation and mindfulness

No trial has yet tested pranayama, meditation or mindfulness on their own for stiffness. Not yet studied is not the same as not working. Breathing and relaxation were part of the integrated yoga that cut morning stiffness in the Ebnezar trial, and stretch is largely set by the nervous system, which slow breathing calms. The pranayama we teach (staircase, ocean, alternate nostril, humming and a gentle shining skull breath) is slow, nasal and taught step by step. Why the kind of breathing matters.

“Flexibility is an asset to any game.”

Stiff joints: for men

In short: men start stiffer, lose range faster, and do far less yoga. That is a good reason to start.

• Men are less flexible at every age. In the study of 6,000 people, women were more flexible at all ages, and men lost range faster: about 0.8% a year against 0.6%.
• The gap is large by midlife. In 3,139 adults aged 46 to 65, women’s flexibility scores were 35% higher than men’s. Over about 13 years, the least flexible men had 1.87 times the death rate of the most flexible, after allowing for age, weight and health. That is a link, not proof that stretching adds years, but it is a striking one.
• Men do far less yoga. In a national survey of 2,567 Australian yoga practitioners, 85% were women.
• Sport and training can make it worse. In Yoga for Sports, Mr Iyengar argues that the average sportsperson is less flexible than the average person in the street, because routine training shortens muscles and stiffens joints. Strong thighs with stiff hamstrings, in his view, is how hamstrings tear.
• Men respond well. In the Hong Kong trial, the men in the yoga group started out stiffer than the men in the comparison group, and still gained lower back and hamstring flexibility over 12 weeks.

What men can do: come to a beginner class and use the props without embarrassment. Chairs, belts and blocks are how stiff bodies get into the poses. Our yoga for stiff guys page shows where to start, and yoga for men covers sport and life after 40.

• Women were 35% more flexible than men in midlife, and lower flexibility was linked with a higher death rate in both sexes. Araújo 2024, a study of 3,139 adults aged 46 to 65, followed for about 13 years. Read the study.
• 85% of Australian yoga practitioners surveyed were women. Penman 2012, a national survey of 2,567 practitioners. Read the survey.

How this comes together in a Flametree class

Everything above points the same way, and it is how we teach.

• Props in every class: chairs, blocks, belts, blankets and the wall, so a stiff body can do each pose steadily.
• Held poses, not bouncing: standing poses, forward bends, twists and gentle back bends, each held long enough for the guard to let go. These are the flexibility exercises we rely on.
• Classes adapted to the people in them. No one-size-fits-all. Tell your teacher which joints are stiff, and the poses are changed for you.
• Strength with range: as Geeta Iyengar said, strength counts. Standing poses build both.
• A practice for every kind of day: our gentle yoga and restorative yoga classes suit stiff or tired days.
• Breath and calm: every class ends in rest, and our pranayama classes go further.

Classes run at Woolner and Coolalinga in Darwin, and LIVE online across Australia.

Read more on stiffness and flexibility

• Yoga for flexibility and stiffness: all our articles
• Yoga for flexibility: your muscles don’t get longer, so what actually changes?
• How to get more flexible after 50
• Tight hamstrings
• Tight hips
• Hip mobility exercises
• Hip flexor stretch
• Stretching classes near me, in Darwin and online
• Yoga for stiff guys, or anyone
• Starting yoga at 40 or beyond: a stiff beginner’s story
• Menopause joint pain
• Arthritis and yoga: the full guide

Take it further

Here are the facts on what helps. The ebook has even more, including stories of how it has helped people. Then do the free classes, see what you think, and buy a pass that puts all of this into action for you.

• Classes, in Darwin or LIVE online: new, or away 3 months or more? 2 free classes, then 10 at half price. Already practising yoga? See the non-beginner half price pass. See every class time.
• Masterclass: stiff, sore joints are part of the first of our 2027 Sunday Arvo Masterclasses with Chris Lalor, on arthritis, in January. Bookings open soon.
• Retreats: a week of daily, adapted yoga in Bali, which is a fast way to loosen up. See the retreats.

Other conditions are in our encyclopaedia of yoga for health conditions.

Stiff joints and yoga: questions people ask

Why are my joints stiff in the morning?

After a night still, joints and muscles have not been moved for hours, and the joint fluid has not been pumped through them. Morning stiffness is also a mark of rheumatoid arthritis, for which Mr Iyengar gave a restful course in Yoga: The Path to Holistic Health. In a trial of 250 people with knee osteoarthritis, yoga cut morning stiffness more than physiotherapy exercises. Gentle movement soon after rising helps the joints loosen.

How much flexibility do we lose as we age?

Less than most people think. In a study of 6,000 people aged 5 to 92, whole-body flexibility fell by about 0.6% a year in women and 0.8% a year in men. Shoulders and the trunk lost the most, and elbows and knees the least. In people aged 55 to 86, age explained only 8 to 10% of the differences in shoulder and hip range between people.

Are stiff muscles short muscles?

Usually not. A 2025 review of 65 studies found that regular held stretching raised how much stretch people could tolerate, while the muscle fibre bundles did not get longer. Most early gains come from the nervous system relaxing its guard. Steady, held poses with props are a good way to teach it to let go.

How long does yoga take to loosen stiff joints?

Weeks, not years. In the trials, reach improved by 3.9 cm at 4 weeks and 8.9 cm at 8 weeks, office workers loosened their backs and hamstrings within 60 days, and adults gained flexibility over 12 weeks of weekly classes. Two or three classes a week, kept up, give the best results.

Is being very flexible a good thing in yoga?

Not in itself. Mr BKS Iyengar wrote that a stiff body pushes back, which gives the mind something to study, while a very supple body can slide into a pose without feeling it. Geeta S Iyengar said suppleness does not count; organic strength does. The aim is even, strong range that you can feel and control.

Am I too stiff to start yoga?

No. Being stiff is the reason to start. Mr Iyengar said age and flexibility are not what make someone eligible for yoga, and he pioneered props so stiff bodies could do the poses. Chairs, belts, blocks and the wall let you start where you are, and the trials show older and stiffer people gaining range.

Why are men stiffer than women?

On average, men are less flexible at every age and lose range a little faster: about 0.8% a year against 0.6% for women in a study of 6,000 people. In midlife, women’s flexibility scores were 35% higher than men’s. Men also do far less yoga: 85% of Australian practitioners in a national survey were women. Yoga trials show men gain flexibility well when they start.

Where can I do yoga for stiff joints in Darwin or online?

Flametree Yoga Studio teaches Iyengar yoga at Woolner and Coolalinga in Darwin, and LIVE online across Australia, with chairs, blocks, belts and blankets in every class. New, or away 3 months or more? You get 2 free classes, then 10 at half price.

Where this comes from: BKS Iyengar, Yoga: The Path to Holistic Health (Dorling Kindersley), the general chapters on props and practice and the courses for backache, hip osteoarthritis and rheumatoid arthritis; Yoga Wisdom and Practice, “The Supple and the Stiff Body”; Yoga for Sports (Westland, 2015); Light on Life; Astadala Yogamala. Geeta S Iyengar, Yoga: A Gem for Women, and her Sydney classes of 1996; BKS and Geeta S Iyengar, Basic Guidelines for Teachers of Yoga. Timothy McCall MD, Yoga as Medicine (Bantam), chapter 9, Arthritis, and his June 2019 list of health conditions helped by yoga. Loren Fishman MD and Ellen Saltonstall, Yoga for Arthritis (W. W. Norton, 2008), from the publisher’s and authors’ published descriptions. Krishna Raman MD and S. Suresh MD, Yoga and Medical Science: FAQ. Flametree’s ebook Too Stiff For Yoga?. Studies as linked above. Everything is summarised in our own words.

This page is general information, not medical advice. Flametree Yoga Studio, Darwin and LIVE online.