How much do you know about your personal trainer’s background? Does he or she have a college degree in kinesiology? A weekend course in fitness training? The surging popularity of personal trainers has raised questions about whether and how they should be trained and certified. As D.C. drafts new rules for trainers, mandated in a 2013 law, we talk with the CEO of CrossFit and a University of Maryland instructor about what trainers need to know.


  • Greg Glassman CEO, CrossFit
  • Jo Zimmerman Instructor, Department of Kinesiology, University of Maryland School of Public Health; former Sport and Health Club fitness director

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