The vital energies (prāṇa) are pervasive overall the body. The vital energies (prāṇa) can be  regulated through the by the engagement of three prāṇic centres (prāṇa-ādhāra-prayoga).

The three prāṇic centres are located:

• between the root of the spine and the navel; dominated the element “air”
• between the navel and the heart;  dominated the element “fire”.
• and between the heart and the head; dominated the element “water”.

The main prāṇa-s are of these three sites are:

• prāṇa, udāna, samāna, vyāna, apāna;
• pācaka, rañjaka, bhrājaka, ālocaka, sādhaka;
• avalambaka, bodhaka, tarpaka, kledaka and śleṣaka.

The engagement and co-regulation of the three prāṇic centres is achieved through a particular technique of prāṇāyāma (prāṇic control) called ujjāyī (lit. victorious).