Empowering adults 45+ to defy aging with strength, vitality, and confidence
strength and mobility training
golf performance
autoimmune & chronic conditions
post rehab and joint replacements
The method of concierge training
With over twenty-five years of experience, Jonathan helps adults over 45 build strength, improve mobility, and regain confidence. His concierge training approach is private and highly personalized - whether clients are rebuilding after surgery, managing an autoimmune conidtion, adapting with a prosthetic, improving golf performance, or just looking to be in the best shape of their lives.
The method ❊
Build strength & Mobility First
Building strength and restoring mobility form the foundation of every program, so clients move better and stay resilient.
01Training That Meets You Where You Are
Each plan adapts to individual needs. Whether you are new to training, returning after an injury, or have decades of experience under your belt, every session is designed to respect your limits while unlocking your potential.
02Built for Long-Term Results
Progress comes from an approach that blends training and recovery into a system designed to deliver lasting strength, confidence, and resilience.
03About Jonathan Flicker, CPT, CES
My career as a fitness professional began twenty-five years ago, but my journey in fitness started long before that — in a small gym in Manhattan, where my father introduced me to strength training at the age of three. In truth, he couldn’t afford a babysitter, so he brought me along. As a scrawny, bullied kid on the Lower East Side, lifting gave me confidence, control, and a sense of identity that’s stuck with me ever since Read More
Real Results from Clients
“My favorite things about working with Jonathan are that he treats me like an athlete and always challenges me to do more than I thought I was capable of. Unlike any other trainer I’ve worked with, he isn’t only focused on strength training; he emphasizes the importance of cardio and mobility as well. Last, but not least, he’s a great guy to be around. He’s smart, funny, and very professional. I can’t recommend him enough!”
Ellen Coleman, 57, CFO
“I was a high school and college athlete, and Jonathan helped me retain some of my old form and strength. He is thoughtful, careful, and very talented in designing a proper exercise program and overseeing the form and execution of every movement. I now have several disability issues, and despite that, Jonathan has been able to get me into shape. I strongly recommend training with him. ”
Jeff Berg, 76, Attorney.
“Jonathan’s expertise as a trainer, blending physiology and fitness knowledge with empathetic training methods, is unmatched. His approach ensures that he guides you toward reaching your fullest potential. Not a lot of coaches have the kindness, patience, and understanding as he does, and it’s why I trained with him for over sixteen years!”
Alan Kenney, 56, Marketing Executive
“Where do I even begin? Jonathan single-handedly transformed my body. I told him I wanted a dancer’s body, and he confidently let me know he could help - and he did. Within weeks, I started seeing results, and I always look forward to my next session thanks to his knowledge and patience.”
Katie Walder, Actress
Frequently Asked Questions
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A concierge fitness trainer is exactly what it sounds like—personal training without the hassle. I come to you, or you come to my private studio. I build your program from scratch, based on your goals, your injuries, your schedule, and your life. No gyms, no guesswork, no distractions. Just high-level coaching, wherever you are.
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We start with a consultation, movement assessment, and body composition analysis—either at your home or at my private studio. From there, I build a customized program based on your goals, injuries, schedule, and equipment. Whether you’re starting from scratch or have years of training behind you, I tailor everything to your current level. Most clients train with me 2–3 times per week. Everything is built around you and your individual needs.
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I train clients in their homes in Los Angeles (currently waitlist only) and throughout the Westlake Village/Thousand Oaks area—or at my private studio in Oak Park. No crowded gyms, no distractions—just focused, personalized training in a space that works for you.
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I’m a Certified Personal Trainer and Corrective Exercise Specialist through the National Academy of Sports Medicine—one of the most respected organizations in the fitness industry. I have over 25 years of professional experience and have worked with hundreds of clients helping build strength, improve mobility, and train safely around injuries. My clients have included physical therapists, surgeons, and anesthesiologists who trust me to deliver intelligent, science-based programming. I stay current on the latest research to make sure every program I deliver is both effective and personalized.
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Consistency is everything—and it’s exactly where most people struggle. I’m your partner in this journey, and I make sure the process is exciting and enjoyable. I help you build momentum through small, meaningful wins—so training becomes something you want to do, not something you “have to” do. Over the years, I’ve watched countless clients go from dreading workouts to making training a natural, energizing part of their lives. My goal is to make this the most consistent and successful you’ve ever been.
Start with a trial,
begin with confidence
Experience the difference of concierge training with a trial option designed to get you started on your fitness journey. Book a complimentary consultation call to discuss your goals and see if we are the right fit.
Serving Westlake Village, Thousand Oaks, and surrounding areas. Los Angeles sessions are currently waitlist-only.