Janu Sirsasana — Head-to-Knee Pose
Janu Sirsasana is a seated forward bend that combines the hamstring stretch of Paschimottanasana with a hip-opening component. One leg extends forward while the other bends and presses into the inner thigh, creating an asymmetrical fold that stretches different sides of the body.
Quick Overview
Janu Sirsasana is an asymmetrical seated forward bend that stretches the hamstring of the extended leg while opening the hip of the bent leg. The pose is accessible to beginners yet offers room for deepening as flexibility improves. The name translates to 'head-to-knee pose,' though the goal is not literally touching the head to the knee but rather maintaining a long spine while folding forward over the extended leg.
Benefits of Janu Sirsasana
Stretches the Hamstrings
The extended leg receives a deep hamstring stretch similar to Paschimottanasana, but the asymmetrical nature allows focus on one leg at a time.
Opens the Hips & Groin
The bent leg externally rotates the hip, stretching the groin and inner thigh muscles while improving hip mobility.
Lengthens the Spine
The forward fold creates space between the vertebrae and encourages healthy spinal articulation from the lower back through the neck.
Calms the Nervous System
The forward fold and focused breathing activate the parasympathetic nervous system, promoting relaxation and mental quiet.
Improves Body Awareness
Practicing asymmetrical folds trains the mind to recognize and address imbalances between the left and right sides of the body.
Body Focus
Deep stretch along the back of the extended leg
External rotation and opening of the bent leg hip joint
Lengthening through the entire spinal column during the forward fold
Relaxation and release as the arms reach toward the extended foot
The asymmetrical fold creates a gentle lateral stretch along the extended leg side
Who Should Practice Janu Sirsasana
Yoga Practitioners at All Levels
The pose can be adapted for beginners with a strap or bent knee while offering deepening potential for intermediate students.
People with Tight Hips
Those who sit for long periods often develop tight hip flexors — Janu Sirsasana directly addresses this by externally rotating and opening the hip.
Runners & Athletes
The combination of hamstring stretch and hip opening makes this an excellent counter-pose for running, cycling, and other lower-body-dominant activities.
Those Seeking Stress Relief
The calming asymmetrical fold encourages introspection and can help release emotional tension stored in the hips.
Who Should Avoid Janu Sirsasana
The external rotation of the bent leg may aggravate groin strains or hip labral issues. Keep the bent leg in a neutral position or skip the pose until healed.
The position of the bent leg may stress the knee joint if the foot is not placed comfortably. Adjust the foot position or support the knee with a blanket.
Asymmetrical forward folds can sometimes aggravate sciatic nerve irritation. Practice with the spine long and the knee bent generously.
Preparation Tips
Sit on a folded blanket to elevate the hips, which makes the forward fold more accessible and protects the lower back
Place a folded blanket or block under the bent leg's knee if it does not rest comfortably on the floor
Keep the extended foot actively flexed throughout the pose to protect the knee and deepen the hamstring stretch
Use a yoga strap around the extended foot if you cannot comfortably reach it while maintaining a long spine
Step-by-Step Instructions
Begin seated with legs extended
Sit with both legs straight in front of you. Flex both feet actively, pressing the heels forward.
Bend one knee
Bend the right knee and bring the sole of the right foot to the inner left thigh. The right knee opens out to the side. Adjust the foot position so it rests comfortably against the left thigh.
Square the torso toward the extended leg
Rotate the torso slightly to face the left leg. Place both hands on either side of the left leg to support the rotation.
Inhale and lengthen the spine
Lift the chest, lengthen through the crown of the head, and press the left sitting bone into the floor. Keep the left foot actively flexed.
Exhale and hinge forward
Leading with the chest, hinge at the left hip and fold forward over the extended leg. Keep the spine as long as possible.
Reach toward the left foot
Take hold of the left foot, ankle, or shin — wherever your hands comfortably reach. Keep the elbows soft and pointing out to the sides.
Hold and breathe
Stay for 5–8 breaths. With each inhale, lengthen the spine. With each exhale, release deeper into the fold. Relax the jaw and shoulders.
Release and switch sides
Inhale to lift the torso upright. Extend both legs, shake them out gently, and repeat on the other side.
Breathing Guidance
Let the breath guide the depth of the forward fold. Inhale to lengthen the spine and open the chest, exhale to soften into the hip and hamstring stretch. The asymmetrical nature of the pose means one side of the rib cage may expand more than the other — simply notice this without judgment and breathe evenly into both sides of the torso.
Common Mistakes
Rounding the lower back to reach the foot
Correction: Keep the spine long and hinge from the hip. Use a strap around the foot if needed — reaching the foot is secondary to maintaining a healthy back.
Allowing the bent knee to lift off the floor
Correction: If the bent knee rises uncomfortably, place a folded blanket or block under it for support. The knee should rest at a comfortable height.
Collapsing into the shoulder of the folded side
Correction: Keep both shoulders level and the chest open. The tendency is to drop the shoulder on the side of the bent leg — actively lift it.
Forcing the head toward the knee
Correction: The name suggests head-to-knee, but the goal is a long spine folding forward. The head will naturally approach the shin as flexibility improves.
Safety Precautions
If the bent knee does not rest comfortably on the floor, place a folded blanket or yoga block under it to avoid strain on the hip and knee.
Active flexion of the extended foot protects the knee joint and engages the calf muscles, creating a safer hamstring stretch.
Only rotate the torso as much as needed to face the extended leg. Over-rotation can strain the sacroiliac joint.
Variations & Modifications
Supported Janu Sirsasana
BeginnerPlace a bolster or folded blanket over the extended leg and rest the forehead on it for a completely supported, passive forward fold.
Janu Sirsasana with a Strap
BeginnerLoop a yoga strap around the extended foot and hold the strap with both hands, allowing a longer spine while still feeling the hamstring stretch.
Bent Knee Janu Sirsasana
BeginnerKeep a generous bend in the extended knee if the hamstrings are very tight. Focus on the hip-opening aspect rather than the hamstring stretch.
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