Charles DeFrancesco is the owner of Fit and Functional, LLC . He is also a consultant for Pure Fitness Group, LLC and Westchester Sports and Wellness . Currently Charles is the chairman of the NFPT education board. Charles is a former co-owner of Greenwich Sports Medicine, where he was in charge of all personal training and therapy operations for over five years.

Charles is certified by the National Academy of Sports Medicine (NASM) and by the National Federation of Professional Trainers (NFPT). He is also USAW Olympic lifting certified and Equinox Fitness Group Prenatal certified. Charles has completed specialty courses for Functional Exercise Specialist, Cardiac Conditions (AFPA), attended EFTI, and has over 5,000 hours of clinical experience. Charles was a guest speaker at the 2009 IHRSA conference in San Diego. He also holds year round seminars and educational courses in the tri-state area.

Charles is one of the authors of the accredited NFPT standard CPT study manuals. He created NFPT's advanced trainer workshop and writes continuing education courses for ACE, NASM, NSCA and NFPT. He is the NFPT workshop coordinator for the Northeast region, and currently sits on the NFPT Board of Education. He is also a board member of the Ethics and Safety Compliance Standard for personal trainers. Charles is the main author of the Principles of Functional Exercise manual and A Squash Players Handbook.

In addition, Charles has written numerous articles and has given presentations on various topics, including: basic movement screenings, essentials of core training, flexibility and strength & conditioning. Many websites and magazines publish Charles's articles, including www.ptonthenet.com. Charles works with a variety of doctors and has consulted with them on developing programs and training staff for their rehabilitation facilities. In addition, he consults with commercial gyms, corporate parks and fitness studios.