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.
never
too much
of one who eats
but
linking with the Supreme
there is
nor
also
overly
abstaining from eating
nor
also
too much
of one who sleeps
or one who keeps night watch too much
not
ever
and
O Arjuna.