By Rabbi Julian Sinclair, October 6, 2011
It is a mitzvah to eat and to have a big meal (at least one) before Yom Kippur, according to the Shulchan Aruch. Big yes, but heavy, no; we do not want to arrive at shul for Kol Nidre feeling over-full, complacent or arrogant.
It is good to get home early and to break off other activities, even Torah learning, to do this. One reason for the mitzvah is to fill up for the fast.