Through the steady and rhythmic practice of the postures, coordinated with breathing and concentration, the body gradually relaxes and the flow of prana (life energy) is allowed to move more freely through the nadis—the subtle energy channels of the body—to all parts of the system, revitalizing and restoring balance.
In this way, body and mind become harmonized, helping to release tension held in both the physical and mental systems. As practice deepens, the individual is brought into greater alignment with the Inner Self, giving rise to a deeper sense of well-being, clarity, and meaning.
Yogic asanas also prepare the body and mind for the deeper practices of concentration and meditation.
Swimming and walking may complement the practice of yoga, but yoga discourages excessive exercise or forms of training that overdevelop one aspect of the body at the expense of overall balance and harmony.
Movement without awareness is not considered true yogic exercise. Asanas are inwardly directed, non-competitive, and meditative in nature. They cultivate calmness, self-awareness, and detachment, helping the practitioner move beyond excessive identification with the body and outward appearance.