The Compendium of Caraka 6.13.23

6.13.23

rūkṣālpabhojanāyāsavegodāvartakarśanaiḥ/
vāyuḥ prakupitaḥ kukṣihṛdbastigudamārgagaḥ//

By dry and sparse food, physical fatigue, and suppression of urges, udāvarta, and emaciating factors, / vāyu is aggravated, moving into the channels of the belly, heart, bladder, and rectum;