Ashtanga Second Series: Nadi Shodhana

What "Nadi Shodhana" refers to

Within the Ashtanga Vinyasa system taught by K. Pattabhi Jois, each sequence has a Sanskrit name describing its intended effect. The Second Series is called Nadi Shodhana, "nerve cleansing" or "channel purification," referring to the nadis, the subtle energy channels described in classical yoga and tantric literature. As with Yoga Chikitsa for the Primary Series, this name reflects a traditional framing of purpose rather than a clinically measurable outcome, and it is worth reading it in that spirit. For the broader distinction between the older, philosophical eight-limb tradition and this twentieth-century posture lineage, see what is Ashtanga yoga.

What the sequence contains

Second Series builds directly on the standing sequence shared with Primary Series, then diverges into new territory. Broadly, it includes:

• A deeper backbend section, including postures such as Salabhasana, Bhekasana, Dhanurasana, Parsva Dhanurasana, Ustrasana, and Kapotasana, which is often cited as one of the more demanding shapes in the whole Ashtanga system.
• Leg-behind-head and hip postures, such as Eka Pada Sirsasana and related variations, requiring significant hip mobility built up over time.
• Balancing and strength postures, including arm balances and transitions that ask for more core and shoulder stability than most of Primary Series.
• A pranayama-adjacent finishing approach, echoing the "nerve cleansing" name, though the finishing sequence largely mirrors that of Primary Series (backbends, inversions, seated closing poses).

Because Second Series asks more of the spine and hips, it is common for a student to spend a long time on just the early backbend postures before continuing further into the sequence.

When students are given it

There is no fixed rule, chart, or number of months that determines when someone "graduates" to Second Series, despite how often the question is asked. In the Mysore method, a teacher observes whether a student's Primary Series practice is steady, whether their breath and bandha engagement hold up under fatigue, and whether foundational backbends (like Urdhva Dhanurasana from Primary Series' finishing sequence) are stable and pain-free. Some teachers introduce a pose or two from Second Series while a student is still completing Primary Series; others wait until Primary Series is fully memorized and consistent. This is a deliberately individualized, teacher-led process, discussed further in our guide to Mysore-style practice, and it is not something to rush by self-teaching from a video, given the injury risk in the backbend section.

Second Series is additive, not a replacement

A common misunderstanding is that Second Series replaces Primary Series once a student advances. In most traditional Mysore rooms, students continue including some or all of Primary Series in their practice even as Second Series postures are added, at least until a teacher indicates otherwise. The two series are understood as cumulative layers of one system rather than sequential levels to pass through and leave behind.

Where this fits in the bigger picture

Second Series sits between the widely practiced Primary Series and the rarely attempted advanced series (A through D, sometimes called Sthira Bhaga), which almost no practitioners complete. See the advanced series for an honest look at how few people practice beyond this point, and Ashtanga injuries and safety for backbend-specific cautions relevant to this stage of practice.