Kathy Gendelman
NFPT-Certified Personal Trainer | FAI-Certified Functional Aging Specialist | CETI- Certified Cancer Specialist | |
AGTC-TRX Certified Coach | Fit Bodies Instructor
NETA-Certified Pilates & Reformer | SCW-Certified Virtual Coach | CFx Certified Master Instructor
TRX-Qualified Yoga & Golf
RYT - 200 Yoga Instructor
Kathy Gendelman is a Fit Bodies Instructor who teaches and coaches at luxury resorts worldwide and a Coach Trainer who mentors other fitness professionals. She is also the proud owner of CORE V3 Fitness in Philadelphia and co-owner of CORE V3 Virtual. Kathy has spent years inspiring others through both in-person and online fitness, building communities where movement is fun, empowering, and accessible to everyone.
Her fitness journey began at Penn State, where she swam competitively, performed on the synchronized swim team, and trained the football players to help them stay strong and injury free. She also discovered early on how powerful movement can be, coaching Special Olympics swim and ski athletes.
With more than 30 years of experience in education, Kathy holds a B.S. in Special Education from Penn State, an M.Ed. in Educational Administration from Arcadia University, and is a Doctoral candidate at Widener University. She is most inspired by her two children, who motivate her to stay strong and active so she can keep up with them in all of life’s adventures.
Kathy has a special heart for active aging and adaptive fitness, but she is equally passionate about supporting women through every stage of life. From perimenopause to post-menopause, she helps women navigate the changes that come with these transitions. Her programs are designed to build strength, improve mobility, boost energy, and restore confidence so women can feel powerful in their own skin at every age.
What makes Kathy different is that her classes, both personal and group, are never just workouts. She creates a strong sense of community where accountability, encouragement, and connection are just as important as the exercises themselves. Her focus goes beyond the physical, supporting health of the mind, body, and soul. Clients do not just show up for a class; they become part of a tribe where friendships are built and lasting change happens.
Her workouts are creative, energetic, and designed to help you feel stronger, healthier, and more confident. She focuses on preventing everyday aches and pains, and when they do appear, she adapts each workout so every individual gets exactly what they need. Kathy offers private training, small group sessions, and group fitness classes, always tailoring the experience to make movement safe, effective, and fun.
Whether your goal is to tone up, move better, boost your energy, or simply feel like yourself again, Kathy’s programs are built to help you achieve results and keep them for life. When she is not coaching, you will likely find her skiing, scuba diving, hiking, traveling, or connecting with peers at fitness conferences.
Favorite Quote: Me vs Me. You vs You.
📲 IG & FB: @gendyfitness


Client TESTIMONIALs
Kathy is the bomb when it comes to Corefirst Training. Best virtual classes - its like she is right next to you, correcting form and giving you a great workout according to your schedule! Every class is well-planned and time flies by!
Toby, PA




