Grace DeSimone is the National Director of Group Fitness for Plus One Health Management, an Optum Company in New York City. She has over 30 years experience in the industry and holds a degree in Dance Education. She is an ACSM certified Personal Trainer and Group Exercise Instructor. Grace is the Editor for ACSMs Resource manual for Group Exercise Instructors (LWW 2011) http://www.informz.net/acsm/archives/archive_1329241.html ... read more.
Marc Santa Maria is the regional group fitness director for Crunch Fitness®, NY. He is a Nike elite athlete and master trainer.