Krishna completely rejects physical extremism. He states with absolute certainty that Yoga is simply not possible (yogo na asti) for someone who eats too much (ati-aśnataḥ), nor for someone who starves themselves by eating nothing at all (ekāntam anaśnataḥ). Similarly, it is impossible for someone who sleeps too much (ati-svapna-śīlasya), and it is equally impossible for someone who stays awake perpetually (jāgrato naiva ca), O Arjuna.