Halāsana (Plow Pose) is the second pose in the finishing shoulderstand sequence, entered directly from Sālamba Sarvāṅgāsana by lowering the legs overhead until the toes touch the floor behind the head. It is held for eight breaths and deepens the cervical flexion and posterior chain stretch initiated in shoulderstand. The pose creates a complete fold of the body that compresses the abdominal organs and further stimulates the thyroid gland.

From Sanskrit hala (plow) and āsana (seat/pose). The body resembles the shape of an Indian plow with the legs representing the plow blade reaching behind. The agricultural metaphor is significant — just as a plow turns and aerates the soil preparing it for new growth, Halāsana is said to till the inner landscape of the body, refreshing and renewing the organs and nervous system.

Halāsana has no separate vinyāsa count as it is entered directly from Sarvāṅgāsana within the continuous shoulderstand sequence. The legs lower overhead on an exhale and the pose is held for eight full breaths. The hands may either remain supporting the back or release to the floor behind, clasping the hands together with arms extended. In the Ashtanga method, the hands typically remain on the back to facilitate the transition to Karṇapīḍāsana.

From Sālamba Sarvāṅgāsana, on an exhale the legs lower in a controlled arc over the head, maintaining straight knees. The toes reach toward the floor behind the head with the balls of the feet making contact. The spine rounds progressively from thoracic to lumbar as the legs descend. The hands remain on the back for support throughout the transition, and the chin maintains its lock against the chest.

In the full posture, the toes press into the floor behind the head with the legs straight and active. The spine is in deep flexion with the torso folded over itself, creating intense compression of the abdominal organs. The arms can remain supporting the back or extend along the floor behind with the fingers interlaced and the arms pressing actively into the ground. The breath is necessarily shallow due to the compressed position of the diaphragm, and the practitioner must focus on maintaining calm, steady rhythm.

On an exhale, the knees bend and draw toward the ears to transition into Karṇapīḍāsana. The hands remain on the back to support the spine throughout this transition. This movement is gentle and controlled — there should be no sudden shifting of weight. The continuous flow from Halāsana to Karṇapīḍāsana maintains the deep inversion and progressively deepens the pratyāhāra (sense withdrawal) effect.

Nāsāgra dṛṣṭi (tip of the nose) is the prescribed gaze. In practice, the eyes look toward the navel or chest since the chin is firmly locked against the sternum. The compressed position naturally restricts visual input, contributing to the sense-withdrawal quality of the finishing inversions. The gaze should remain soft and unfocused to promote internalization.

Jālandhara bandha remains strongly engaged as the chin presses even more deeply into the chest than in Sarvāṅgāsana due to the additional flexion of the thoracic spine. Mūla bandha keeps the pelvic floor toned and the lower body light despite the gravitational pull of the legs overhead. Uḍḍīyāna bandha is naturally enhanced by the compression of the abdomen, though the practitioner must be careful not to over-grip the abdominal wall, which would restrict the already limited breathing.

The legs remain straight with active engagement through the quadriceps and dorsiflexed ankles. The toes press firmly into the floor, and the feet are together. The spine should flex evenly rather than hinging sharply at one segment. The shoulders stay rolled under with the elbows no wider than shoulder-width if the hands are still on the back. If the arms extend to the floor, the wrists stack over the shoulders and the hands clasp firmly.

Forcing the toes to the floor when flexibility does not allow it places dangerous stress on the cervical spine — the toes should reach naturally or the hands can remain on the back for support. Bending the knees reduces the posterior chain stretch and can allow the weight to shift onto the neck. Holding the breath is common due to the compressed abdomen, but the practitioner must maintain continuous ujjāyī breathing even if shallow. Splaying the elbows destabilizes the shoulder base and increases cervical load.

Halāsana creates an intense stretch of the entire posterior chain from the cervical erectors through the thoracolumbar fascia, hamstrings, and gastrocnemius. The cervical spine is in maximum flexion, requiring healthy disc integrity at C4-C7. The abdominal organs are compressed, which is said to improve digestive function through a wringing effect. The thyroid continues to receive enhanced blood flow from the chin lock and inverted position.

Traditionally used to treat headaches, insomnia, and fatigue due to its calming effect on the nervous system. The compression of the abdominal organs is said to improve digestion and relieve constipation. Like Sarvāṅgāsana, it is prescribed for thyroid imbalances through the sustained jālandhara bandha. The pose can help relieve backache by gently tractioning the lumbar spine under the weight of the legs.

If the toes do not reach the floor, a chair or bolster can be placed behind the head to receive the feet at a higher level. Keeping the hands on the back provides additional support for students who cannot maintain the pose freely. For students with neck sensitivity, the same blanket setup used in Sarvāṅgāsana (folded blankets under the shoulders) should remain in place. Students who cannot achieve the full pose can practice Supta Koṇāsana as a gentler alternative for the overhead leg position.

Sālamba Sarvāṅgāsana is the direct preparation as it precedes Halāsana in the sequence and establishes the inverted base. Paścimatānāsana and other seated forward folds progressively lengthen the posterior chain needed for the toes to reach the floor. Uttānāsana and Prasārita Pādottānāsana from the standing series develop the hamstring length required. Core strength from Navasana supports the controlled lowering of the legs.

Matsyāsana serves as the counter-pose for the entire shoulderstand cycle, including Halāsana, by taking the cervical spine into extension after prolonged flexion. Uttāna Pādāsana further opens the throat and chest. The Ashtanga method wisely places these counterposes after the full shoulderstand sequence rather than between each pose, maintaining the energetic continuity of the inversions.

The plow is a symbol of preparation and transformation across many cultures. Just as the plow prepares the field for seeds, Halāsana prepares the body and mind for the deeper internalization that comes in the closing sequence. The progressive compression of the senses in the shoulderstand series — from the open inversion of Sarvāṅgāsana to the folded enclosure of Halāsana — mirrors the yogic process of pratyāhāra described in Patañjali's Yoga Sūtras (II.54).