Prana is the basis of life in the Vedic vision. It is not just breathing. It is vital force in everything, from the material to the subtle. In Vedanta, it connects the physical body, annamaya kosa, to the higher levels. It forms pranamaya kosa, the layer of vital energy.

The Universal Nature of Prana
The Upanisads say: prana sustains everything, from animals to devas. The Chandogya Upanisad (3.15): all breathe prana as air; it is the life of everything.
It operates in layers: physical (breathing, functions), energetic (vitalizes systems), mental (emotional processes), cosmic (animates creation).
Without prana, form dies.
Pranamaya Kosa: The Energy Body
Five kosas: pranamaya vitalizes annamaya. The Taittiriya Upanisad: made of the five pranas, the karmendriyas, and currents in the nadis.

It fills the physical body and unites everything. Without it, the kosas do not function.
The Five Pranas: Vayus or Vital Winds
One prana becomes five vayus:
### 1. Prana (Forward Movement) Heart and thorax. Absorbs: air, food, sensations, mind.
### 2. Apana (Downward Movement) Pelvis and lower abdomen. Eliminates: excretion, reproduction, mental toxins.
### 3. Samana (Balancing Movement) Navel. Digests food and experiences.
### 4. Udana (Upward Movement) Throat and head. Growth, speech, enthusiasm, post-death departure.
### 5. Vyana (Expansive Movement) Entire body. Circulates nutrients, blood, coordinates.
Interaction of the Five Pranas
Integrated system. Prana absorbs, samana transforms, vyana distributes, udana utilizes, apana cleans. Imbalance in one affects all.
Prana and Spiritual Practice
### Pranayama Purifies nadis, balances ida-pingala, awakens kundalini.
### Meditation Witness prana without grasping.
### Self-Knowledge Viveka: I am not prana; I am the one who sees.
The Non-Dual Understanding
Advaita: transcend prana. Use it to separate from body, then see Consciousness. Aitareya (3.1.3): prajnanam brahma.
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