Charak Samhita
इत्युक्तमृतुसात्म्यं यच्चेष्टाहारव्यपाश्रयम्। उपशेते यदौचित्यादोकःसात्म्यं तदुच्यते ॥४९॥
[Okasatmya(acquired adaptation or habituation)] In this way, we discussed about seasonal adaptations with respect to activities and diet. If any diet and lifestyle become suitable to the body by its regular/habitual use then it is called okasatmya (acquired adaptation or habituation).
english translation
ityuktamRtusAtmyaM yacceSTAhAravyapAzrayam। upazete yadaucityAdokaHsAtmyaM taducyate ॥49॥
hk transliteration by Sanscript