Sleeping Vishnu — Anantasana, from Ananta, the cosmic serpent on whom Vishnu reclines — sounds like a pose you could nap in. The name is a trap. You lie on your side, prop your head on your hand, extend the top leg toward the ceiling, and hold its big toe. The moment the leg goes up, the pose reveals itself: a balance on a rolling surface, a serious hamstring stretch, and one of the few side-body core strengtheners that requires no crunching whatsoever. The stillness of the image is real; so is the quiet shaking of your obliques.
Why this pose is worth your time
Most core work in fitness culture is front-loaded: crunches, planks, sit-ups. Useful, but incomplete. The core is a cylinder, and its sides — the obliques and quadratus lumborum — are what keep you upright when the world tips you sideways. Anantasana trains exactly those muscles, isometrically, while also stretching the hamstrings of the raised leg and opening the side body. It is the rare pose that is simultaneously strength work, flexibility work, and balance training. It also asks nothing of the wrists, which makes it a welcome alternative on days when Side Plank is off the table.
Sleeping Vishnu — Anantasana
How: Lie on your left side with legs extended and stacked. Prop yourself up: bend the left elbow, upper arm on the floor, and rest the side of your head in your left palm — the classic reclining-reader position. Bend the right knee, catch the right big toe with the first two fingers of the right hand (a toe lock), and slowly straighten the right leg toward the ceiling, sole of the foot facing the sky. Hips stay stacked — the top hip tends to roll backward, so press it gently forward. Breathe five to ten breaths, keeping the body in one plane like a book pressed in a press. Lower with control, rest a breath, and repeat on the other side.
Why: Stacking the hips is the entire pose. When the top hip rolls back, the hamstring gets a pass and the core goes on holiday. Pressing the hip forward keeps the stretch honest and forces the side waist to hold the line.
With a strap — the reachable version
How: Loop a strap around the ball of the top foot and hold the strap with the top hand, elbow straight. Extend the leg as far as the hamstring honestly allows.
Why: If the toe lock rounds your spine or bends the bottom leg, the strap buys you length and keeps the pose's geometry clean. A straight-ish leg on a strap beats a bent leg with a heroic grip.
Knee bent, foot to inner thigh — the balance-first version
How: Keep the top knee bent and place the sole of the top foot against the inner thigh of the bottom leg, like a side-lying tree pose. Top hand rests on the top hip.
Why: Removes the hamstring demand entirely so you can isolate the balance and the side-body strength. A good first week with this pose.
The blanket-under-ear detail
Here is the small thing most instructions skip: resting your head in your palm with the elbow on the floor leaves the neck hanging in space, craned sideways toward the shoulder. Ten breaths of that and the neck complains louder than the core. The fix is a folded blanket under the head and arm — enough height that the head, elbow, and shoulder form one supported line. The ear gets a pillow, the neck gets neutral, and the pose becomes sustainable. Teachers demonstrate it without the blanket because blankets are unglamorous; use one anyway.
The wobble is the point
You will rock forward and backward. Everyone does. The floor contact in this pose is a narrow strip — hip, outer thigh, elbow — and the body corrects constantly to stay stacked. Those corrections are the training: the obliques and deep stabilizers firing in small, rapid, intelligent bursts, the same way they do when you catch yourself on a slippery step. Treat the rocking as information rather than failure, and let the breath stay slow while the muscles do their fast, quiet work.
Where it fits
Anantasana slides neatly into the middle of a practice, after the standing work and before the floor wind-down. It follows Boat Pose well — front core, then side core — and prepares the hamstrings for seated folds. Two or three rounds per side, with a breath of stillness between, is a complete dose.
Vishnu sleeps on the serpent in perfect stillness, suspended over the cosmic waters. Your version will wobble, and that is not a lesser pose — it is the honest one. Stack the hips, pad the ear, breathe, and let the shaking do its quiet arithmetic.