In 2003, the Accreditation Council for Graduate Medical Education (ACGME) established the hour limits for postgraduate residency training programs based on an 80-hour work week, 1 day off in 7, a maximum shift length of 24 hours with 6 hours of care continuity, and overnight call coverage no more frequent than every third night.1,2 In 2011, the ACGME further restricted duty hours, with interns limited to 16-hour duty shifts, coupled with tighter junior resident supervision rules and further reduction of duty continuity to 4 hours (after a shift length of 24 hours).2