Prāṇa is the élan vital.
It is the mover and the sustainer of the body in all living beings.
Because of this all pervasive movement and irrepressible vitality,
it is also hard to keep reined in through the ten sensory horses.
When the personalised field of Prāṇa becomes unreined,
it transforms into Vāta and the system becomes disturbed.
The primary practice in Yoga to minimise the
conversion of Prāṇa into Vāta is Prāṇāyāma.

Link to Series: 108 Yoga Practice Pointers