Elite personal training with the legendary Mr. America Jason Kozma and his team – Trusted by Celebrities and Athletes

Personal Training

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Client Transformations

Nothing speaks louder than results. Browse through inspiring transformations from people just like you who committed to change with Jason Kozma’s personal training.

Before and After

Before and Afters
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Personal Trainer in Los Angeles

Meet Jason Kozma — Mr. America, Celebrity Trainer & Body Transformation Expert

Jason Kozma -The Best Personal Trainer in Los Angeles

With over 30 years of experience and a legacy crowned by the prestigious Mr. America title, Jason Kozma is more than just a personal trainer — he’s a body transformation architect trusted by celebrities, professional athletes, and fitness enthusiasts worldwide.

Jason’s unique approach combines decades of bodybuilding expertise, cutting-edge nutrition knowledge, and an unmatched ability to connect the mind and muscle to sculpt your best physique. Whether you’re stepping into a gym for the first time or preparing for a competition, Jason’s mentorship ensures you get results that last.

Offers custom designed fitness programs for weight loss, fat loss, general fitness, bodybuilding, strength, sports, corrective exercise, injury rehabilitation, and of course, rapid body transformations. Get A New Body In 8 Weeks!

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Why Train with
Mr. America Jason Kozma?

West Los Angeles Personal Trainer
Personalized Programs

No cookie-cutter plans. Your workouts evolve as you do.

Mind-Body Mastery

Learn to control your muscles with precision for maximum gains.

Rapid Fat Loss & Muscle Gain

Proven strategies that deliver real, measurable results.

Balanced Nutrition

Simple, whole-food nutrition plans tailored specifically for you.

Privacy & Exclusivity

Confidential training for celebrities and high-profile clients.

Los Angeles
Personal Training Specialities

Personal Training Client Testimonials

isabelle fuhrman personal trainer
Thank you for everything this year. You are the best and I wouldn't be...
Isabelle Fuhrman
actor
model personal training
I am so lucky to have found Jason when I did. I had gained...
Emmy
Professional Model
over 50 bikini woman
Dear Jason, When my neighbor Paulette recommended you as her personal trainer, I was...
Delaney; Mother
Gourmet chef
personal trainer testimonial
Jason, I tried another more “nationally recognized” program to lose fat and gain muscle...
online personal training client
ripped male over 40 steven buscemi
I always look forward to my training sessions with Jason. No matter how I...
Steven Buscemi
Entrepreneur (not the actor)
red carpet ready
4 years living in hotels, working way too hard and working out way too...
Kym Wilson
red carpet ready
senior weight training
Jason Kozma is not for everyone. My experience with Jason is that he is...
David
Brentwood
bikini personal trainer
After a couple unsuccessful meetings with trainers, who didn’t seem to have any knowledge...
Meredith
Bikini Competition Coaching
fitness woman
Being physically active and in shape has always been a part of my life....
Roxanne
over 35 Bikini Body

Media & Press Highlights

Jason’s expertise has been spotlighted in top media outlets, from MTV and Muscle Mag to KTLA and Cosmopolitan.

Get Started in 4 Simple Steps

Initial Consultation

Initial Consultation

We discuss your goals, lifestyle, and fitness history.

Custom Plan Creation

Training Begins

Create a schedule with your Trainer and tailored workouts and nutrition plans designed for you.

Regular Check

Regular Check-Ins

Weekly progress tracking and program adjustments.

Ongoing Support

Ongoing Support

Unlimited guidance from Jason and his expert team.

Google Reviews

Google star 1Google star 2Google star 3Google star 4Google star 5
Jason, My wife, Janice, is very pleased with her association with her trainer, Debby McKnight. She appreciates her depth of knowledge. She was especially impressed that Debby immediately noticed, at the first session, that she needed to work on correcting/improving her posture. Working together her posture has definitely improved. Janice looks forward to her sessions. Thank you for checking in, Jason. Paul
Posted on Google Google
Paul Gilbert profile picture
Paul Gilbert
Google star 1Google star 2Google star 3Google star 4Google star 5
I had the desire to get in shape and had been mulling over the idea of getting a personal trainer. The diagnosis of a connective tissue disorder was the final push I needed to start looking for a great trainer that could address my specific circumstances. After a lengthy research process, I found Jason and was very impressed by his credentials, program, success stories, and responsiveness to my inquiry. After chatting with him in person, I was reassured that his program would be a good fit for my goals of gaining muscle to support my connective tissue and losing fat to be healthier all around. His diet plan is strict yet manageable, and I appreciated that Jason also had recommendations for supplements, protein powders, et cetera. He does a great job of getting people of all experience levels acclimated to the world of weight training, plus he is a pro bodybuilder so he definitely knows what he is doing. He paired me up with my personal trainer, Debby, who is a perfect match. She is incredibly knowledgeable (also a pro bodybuilder), motivational, has a very similar health history to me, and is overall great to chat with during my workouts. I have seen a lot of great progress in a few short weeks that I know I would not have achieved without Jason and Debby. Overall, I would highly recommend Jason’s program to anyone regardless of experience level, health history, or anything else that may be holding you back from finally working towards your health/body goals!
Posted on Google Google
Noah Jackson profile picture
Noah Jackson
Google star 1Google star 2Google star 3Google star 4Google star 5
I hired Jason and Los Angeles Personal Training to help me get stronger (and fit in my old pants) after having two babies. Jason was super responsive and professional. He asked what my goals were and talked me through the process and sent the information in writing as well. He provided an 8-week postpartum diet, cardio, and strength plan. It allowed for modifications as a breastfeeding mother and was very doable, though it required a lot of dedication as expected. I worked with personal trainer Dennis who is very knowledgeable, prompt, and flexible with training times. They are both bodybuilders and are very knowledgeable about diet and fitness, including knowledge beyond just heavy lifting. I am fitter and stronger than I was before having both babies and they have refreshed my dietary habits such that I have been able to maintain my weight during the holidays with ease.
Posted on Google Google
Nana Wilberforce profile picture
Nana Wilberforce
Google star 1Google star 2Google star 3Google star 4Google star 5
Amazing trainer with a great network of (also) stellar trainers. If you can train with him directly - awesome. If you can't, he will refer you to someone who is also awesome. My 4 week program got me started on a real life-changing journey. Thank you, Jason!
Posted on Google Google
Anthony Villanova profile picture
Anthony Villanova
Google star 1Google star 2Google star 3Google star 4Google star 5
Jason created a great nutrition plan catered specifically to my body, that I lost 10 lbs in the first week. David was my trainer and was super friendly and very knowledgeable about any questions I had. He guided me to sculpt the exact body I had told him I envisioned. I recommend Jason Kozma and David Hughes as trainers if you want to see results, and you want to see them quick.
Posted on Google Google
Anika Anderson profile picture
Anika Anderson
Google star 1Google star 2Google star 3Google star 4Google star 5
I'm getting married this summer and my goal is to get back down to the weight I was when I first met my fiancé. On my own, I was losing about 1 pound/week - which isn't bad. But now, with Jason's nutritional plan and David's training, I am losing an average of 2.8 pounds/week! Incredible, right?! Seriously - just do what they tell you and you'll get 3x the results you would going solo!
Posted on Google Google
Jennifer Clark profile picture
Jennifer Clark
Google star 1Google star 2Google star 3Google star 4Google star 5
Great trainer who is honest, flexible and knowledgable. Highly recommend to anyone who is serious about competition training.
Posted on Google Google
Allie Garabekyan profile picture
Allie Garabekyan
Google star 1Google star 2Google star 3Google star 4Google star 5
I wrote Jason asking for a consult and he made himself available on my schedule. We met so he could design the best program for my fitness needs which was great but he also made it fun. He's super passionate about fitness and encouraging without being pushy. I've been working out with his co-trainer Tasha who's amazing. Tasha knows exactly how far to push me without over doing it. I tend to burn out after some time but she keeps it fresh. She's prompt, energetic, flexible, knowledgeable and a pleasure to workout with.
Posted on Google Google
Cheryl Lindsey profile picture
Cheryl Lindsey
Google star 1Google star 2Google star 3Google star 4Google star 5
Highly recommended best body bulding trainer .
Posted on Google Google
mary saad profile picture
mary saad

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