Grace T. DeSimone, B.A., is the national group fitness director for Optum. She and her group fitness teams manage group exercise classes in worksite wellness programs across the country. She serves on the executive council of ACSM’s Committee on Certification and Registry Boards. She also is the editor for ACSM’s Resource Manual for Group Exercise Instructors (2011) and is the 2016 IDEA Health & Fitness Association Program Director of the Year. She holds a Bachelor of Arts degree in Dance from Hunter College, City University of New York, in New York, NY, and is an ACSM Certified Group Exercise Instructor® and an ACSM Certified Personal Trainer®.