Las Vegas Review-JournalFitness instructor aims to keep her students motivatedLas Vegas Review-JournalFitness instructor Robyin Morales leads Karen Creekmore, Lilie Walker and other attendees in a workout April 8 at the Cambridge Recreation Center & Water Park, 3930 S. Cambridge St. (F. Andrew Taylor/View). web1_EV-MOTIVATION-APR17-14-2-rgb.jpg.