There’s a moment that happens in yoga – sometimes early on, sometimes after years of practice – when you realise you’ve arrived somewhere different to where you thought you were going.

You came for the stretching, maybe. Or the breathing. And then one day, mid-practice, something shifts. A thought loosens. A feeling surfaces. You notice that your body and your mind aren’t really separate things at all.

Yoga has always known this. Long before modern science began cautiously acknowledging the mind-body connection, the ancient teachers were already working with a far more detailed map.

They called it the pancha kosha model – the five sheaths, or layers – and it comes to us from the Taittiriya Upanishad, written around the sixth century BCE. It’s one of the teachings I return to in my own practice, in the way I think about what I’m actually doing when I step onto the mat.

What is a Kosha?

The Sanskrit word kosha means sheath or layer – think of the skin of an onion, or a set of nesting bowls, each one contained within the next. According to this teaching, we are not simply a physical body with a mind rattling around inside. We are five interconnected layers of being, each more subtle than the last, all of them expressions of the same living whole.

The outermost layer – Annamaya Kosha – is the physical body. The flesh, the bones, the tissue. The body that turns up to class and occasionally complains about the cold floor.

Moving inward, we meet Pranamaya Kosha, the layer of energy and breath. This is the vital force that animates the physical body – the prana that flows through us and as any pranayama practice quickly reveals, is far more responsive to attention than we might expect. (If you’ve worked through any of The Living Breath course, you’ll have already begun to sense this layer directly).

Deeper still is Manomaya Kosha – the mental and emotional sheath. The layer of thought, reaction, sensory processing. The part of you that replays a difficult conversation during Savasana.

Then Vijnanamaya Kosha – the layer of wisdom and discernment. The quieter inner voice that sometimes knows something before the thinking mind catches up.

And at the centre, Anandamaya Kosha – the bliss sheath. The layer of deep stillness, of connection to something larger than our own story.

Why this Matters in Practice

What strikes me most about this teaching is its insistence on relationship. The koshas aren’t a hierarchy – no layer is more important than another. They interpenetrate. A disturbance in one creates ripples in all the others. A tight jaw and a worried mind are not separate problems. A practice that only addresses the physical body is working with one layer of a five-layered system.

This is why yoga – real yoga, unhurried and attentive – can feel so different from other forms of movement. When we slow down enough to feel what’s actually happening, we’re not just stretching. We’re listening across all five layers at once.

In the articles that follow, I explore each kosha individually – what it is, what it asks of us, and how we might begin to work with it consciously. But even before we go further, it’s worth sitting with the simple recognition that this model offers: you are more than you think you are. More layered, more connected, more whole.

That’s a good place to start.