With 13+ years of experience in NYC — in an industry where most trainers don't last more than a few months — Trevor Cassidy has built his reputation on strong client relationships, the ability to connect with everyone at every level, and truly personalized training programs that adapt to your life.
There is no one-size-fits-all approach here. Every program is built around your unique goals, fitness level, and schedule — and adapts as your life changes. Whether you are working around an injury, navigating a busy season at work, or just getting started, Trevor Cassidy personalizes every detail to meet you where you are.
Progressive strength training built around compound lifts and functional movement patterns — squat, hinge, push, pull, carry, rotate — tailored to every experience level and designed to make you stronger in the gym and more capable in daily life.
Evidence-based weight loss coaching that combines strength training, metabolic conditioning, and sustainable nutrition habits — no crash diets, no extreme protocols, just consistent results.
Sport-specific training programs that develop the speed, power, agility, and endurance your game requires. Built for competitive athletes and serious recreational competitors.
Fully remote personal training with custom programming, video form reviews, nutrition guidance, and weekly check-ins. The same expert coaching, delivered wherever you train.
Practical, science-backed nutrition coaching that aligns your eating habits with your training goals. No rigid meal plans — just sustainable strategies that produce real results.
Custom workout programs written by a certified trainer and delivered for independent execution. Structured periodization, exercise selection, and progression — without paying for in-person sessions.
Safe, progressive fitness training for adults 60 and older that builds strength, improves balance, maintains bone density, and preserves the independence that matters most.
Expert consulting for home and corporate gym design. Trevor Cassidy leverages 13+ years of training experience across dozens of facilities to plan layouts, select equipment, and build spaces that support real programming.
In an industry where most trainers do not last more than a few months, Trevor Cassidy has been building client relationships across NYC and Northern New Jersey for over 13 years. His longevity comes down to two things: an evidence-based approach that actually delivers results, and the interpersonal skills to connect with everyone — from first-time gym-goers to experienced athletes. He combines progressive overload, periodization, and nutrition science with the kind of ongoing support and genuine investment in your success that keeps clients coming back year after year.
Hear from the people I train across NYC and Northern New Jersey.
“Trevor is the best in the business. He is incredibly knowledgeable, motivating, and genuinely cares about his clients' progress. Every session is challenging but structured perfectly. I've seen results I never thought possible.”
James S.
Trevor Cassidy trains clients across all of Manhattan and 30+ towns in Northern New Jersey, including Bergen County, Passaic County, and Essex County.
Upper East Side, Upper West Side, Midtown, Chelsea, Greenwich Village, SoHo, Tribeca, East Village, Financial District
NYC TrainingHackensack, Paramus, Ridgewood, Montclair, Teaneck, Englewood, Fort Lee, Wayne, Clifton, Newark, and 20+ more towns
All LocationsBook a free consultation with Trevor Cassidy and start your personalized training program today.
About the author
Trevor Cassidy is a NASM Certified Personal Trainer, Corrective Exercise Specialist, Performance Enhancement Specialist, and Certified Nutrition Coach with more than 13 years of coaching experience. He is also a former professional rugby player.
Credentials and experience