Bhagavad Gita 6.16

नात्यश्नतस्तु योगोऽस्ति न चैकान्तमनश्नतः।न चातिस्वप्नशीलस्य जाग्रतो नैव चार्जुन॥

nātyaśnatastu yogo'sti na caikāntamanaśnataḥ |na cātisvapnaśīlasya jāgrato naiva cārjuna ||

Verily, Yoga is not possible for him who eats too much, nor for him who does not eat at all, nor for him who sleeps too much, nor for him who is always awake, O Arjuna.

Meditation is not for him who eats too much, nor for him who eats not at all; not for him who is overly addicted to sleep, nor for him who is always awake.

Our plain-language meaning of this verse is waiting for scholar review.