Half Lord of the Fishes Pose
अर्ध मत्स्येन्द्रासन
Ardha Matsyendrāsana — an intermediate twist that works the obliques, spinal erectors, glutes.
How to do Half Lord of the Fishes Pose
Read all of it before starting, and read the cautions further down before starting at all.
Sit tall, bend the left knee and slide the left heel beside the right hip, or keep that leg straight instead.
Cross the right foot over the left thigh and plant it flat on the floor outside the left knee.
Place the right hand on the floor behind you and hug the right knee with the left arm or hook the left elbow outside it.
Inhale to lengthen the spine, exhale to rotate the ribs to the right.
Turn the head last and only as far as it goes comfortably, hold, then change sides.
Hold: 30–60 seconds each side. Keep the breath moving throughout — if you are holding it, the pose is too much for today.
Muscles worked
Where the effort and the lengthening land. Primary groups do most of the work; secondary groups assist or are stretched.
What Half Lord of the Fishes Pose does
Described mechanically — what the movement does to muscle and joint. Not a list of conditions it treats, because a pose does not treat conditions.
- Rotates the whole spine with the pelvis pinned by the crossed leg.
- Stretches the outer hip and glute of the crossed leg while the trunk turns away from it.
- Loads the obliques through a long, held rotation rather than a swing.
Half Lord of the Fishes Pose is one of 25 twists in this library and one of 60 poses rated intermediate. Poses that rotate the spine around its long axis with the pelvis anchored.
Who should skip Half Lord of the Fishes Pose, or change it
- Pregnancy — avoid this closed shape entirely.
- Disc injury, spinal fusion or unexplained back pain.
- Sacroiliac instability, which the folded bottom leg readily aggravates.
- Recent abdominal or hernia surgery.
- Knee injury on the folded leg — keep that leg straight along the floor.
General information only — not medical advice. Some asanas are unsuitable during pregnancy, injury or specific conditions. Learn from a qualified teacher and stop if anything hurts. If you are pregnant, recovering from surgery or managing any health condition, ask your doctor before starting a practice, and learn the pose itself from a qualified teacher who can see you move.
Common mistakes in Half Lord of the Fishes Pose
What tends to go wrong, and the specific correction — not "engage your core".
MistakeRounding the whole back to get the elbow outside the knee.
FixHug the knee with the arm instead and keep the spine tall — height first, depth later.
MistakeTurning the head hard while the ribs stay still.
FixRotate the sternum first and let the neck follow the last few degrees.
What a practice like this costs in energy
Nobody has measured a single asana in a metabolic cart. The 2024 Adult Compendium of Physical Activities publishes MET values per style of practice, so Half Lord of the Fishes Pose is mapped to the nearest published code — 02150, yoga, Hatha, 2.5 MET — and the figures below are for a practice of that kind, not for holding this one pose.
| Time practising | 10 min | 20 min | 30 min | 45 min | 60 min |
|---|---|---|---|---|---|
| Calories | 31 | 61 | 92 | 138 | 184 |
Calculated as MET × 3.5 × 70 kg ÷ 200 kcal per minute — the standard ACSM relationship, shown in full on the method page. Scale it to your own weight by multiplying by your weight in kilograms and dividing by 70. The whole activity dataset, including every non-yoga activity, is at BurnLab.
Questions
How do you do Half Lord of the Fishes Pose?
Sit tall, bend the left knee and slide the left heel beside the right hip, or keep that leg straight instead. Cross the right foot over the left thigh and plant it flat on the floor outside the left knee. Place the right hand on the floor behind you and hug the right knee with the left arm or hook the left elbow outside it. Inhale to lengthen the spine, exhale to rotate the ribs to the right. Turn the head last and only as far as it goes comfortably, hold, then change sides. Hold for 30–60 seconds each side.
What does Half Lord of the Fishes Pose work?
Primarily the obliques, spinal erectors, glutes, with the shoulders, abdominals, hip abductors assisting or lengthening. In mechanical terms: rotates the whole spine with the pelvis pinned by the crossed leg.
Who should not do Half Lord of the Fishes Pose?
Pregnancy — avoid this closed shape entirely. Disc injury, spinal fusion or unexplained back pain. Sacroiliac instability, which the folded bottom leg readily aggravates. Recent abdominal or hernia surgery. Knee injury on the folded leg — keep that leg straight along the floor. This is general information, not medical advice — if any of these apply to you, ask your doctor and learn the pose with a qualified teacher rather than from a page.
Is Half Lord of the Fishes Pose suitable for beginners?
Not as a first pose. Half Lord of the Fishes Pose is rated intermediate here: it assumes a working base of strength and range, and a teacher who has watched you move. Build up through the twists poses marked beginner first.
How many calories does Half Lord of the Fishes Pose burn?
The honest answer is that nobody has measured a single asana. The 2024 Adult Compendium of Physical Activities publishes MET values for styles of yoga, not for individual poses. Half Lord of the Fishes Pose sits closest to Compendium code 02150, yoga, Hatha, at 2.5 MET — about 92 kcal for 30 minutes of that kind of practice for a 70 kg adult. Holding one pose for a minute is a rounding error either way.
Sequences that use Half Lord of the Fishes Pose
Related poses
More twists — first at the same level, then the rest of the family.
Asana names are traditional. Every step, benefit and caution on this page is written for YogaPath rather than reproduced from any book, studio or other library — see how this site is written. Energy figures derive from the 2024 Adult Compendium of Physical Activities. General information only — not medical advice. Some asanas are unsuitable during pregnancy, injury or specific conditions. Learn from a qualified teacher and stop if anything hurts.