So I have happened upon the best drink for EPs ever: 12 oz strong black coffee 6 oz chocolate Slim Fast (1/2 can) 2 tbsp of orange flavored Metamucil You can adjust amounts to taste. I find that this drink addresses many of the major problems in EM. We don't have time to eat or go to the bathroom and the hours are long and irregular. this takes care of 2 of those and forces you to address the third. I highly suggest offering a cup to the next med student who refers to EM as a "lifestyle specialty."