Significance of vayu: Vayu is life, vayu is strength, vayu mainstays living organism, the same vayu is verily the universe, and hence the Lord Vayu is praised.
[Important role of vayu in health] When normal (non vitiated) vayu is at its abode with unobstructed (free) movement, is responsible for long lifespan of hundred years devoid of diseases.
प्राणोदानसमानाख्यव्यानापानैः स पञ्चधा | देहं तन्त्रयते सम्यक् स्थानेष्वव्याहतश्चरन् ||५||
[Types of vayu and their functions] Vayu is of five types namely prana, udana, samana, vyana and apana and they mechanize the body optimally occupying their sites without any irregular movement.