Bhagavad-gītā 6.16
BG 6.16
Open the full passageनात्यश्नतस्तु योगोऽस्ति न चैकान्तमनश्नतः । न चातिस्वप्नशीलस्य जाग्रतो नैव चार्जुन ॥१६॥
Sanskrit
nāty-aśnatas 'tu yogo 'sti na caikāntam anaśnataḥ na cāti-svapna-śīlasya jāgrato naiva cārjuna
Translation
There is no possibility of one's becoming a yogī, O Arjuna, if one eats too much or eats too little, sleeps too much or does not sleep enough.