Natyashastra
अतिपीतं तथा भुक्तं व्यायामं नैव कारयेत् । अचलैर्मधुरैगात्रैश्चतुरश्रेण वक्षसा ॥ १०२॥
Exercise should not be undertaken after excessive drinking or eating. It should be performed with a steady and graceful body, with a well-formed square chest.
english translation
atipItaM tathA bhuktaM vyAyAmaM naiva kArayet । acalairmadhuraigAtraizcaturazreNa vakSasA ॥ 102॥
hk transliteration by Sanscript