Strength, Mobility &
Body Composition Coaching
Personalized strength coaching and 1-on-1 training designed around your goals—fat loss, performance, mobility, technique, and sustainable progress.
Start strong. Move better. Feel confident.
Your plan, built around you
Technique-first training with progressive programming so you get measurable progress without burnout.
Fat Loss
Sustainable habits + training
Strength
Progressive overload
Mobility
Move pain
Form Analysis
Refine technique fast
By appointment only • In-person or remote
Certified Coaching
CSCS® & NSCA-CPT® standards with safe, science-based programming.
Trusted Locally
Serving El Segundo & South Bay with results-driven 1-on-1 training.
Remote Coaching
Form checks, plans, and accountability—train anywhere with confidence.
Programs built for real progress
Choose a track that matches your goal
Whether you’re training in El Segundo or online, you’ll get a clear plan, coaching, and accountability.
Personal Training
1-on-1 coaching focused on technique, strength, and measurable progress.
Remote Coaching
Train anywhere with programming, check-ins, and form review support.
Mobility Class
Improve range of motion, feel better, and lift with cleaner mechanics.
Not sure what fits?
Book a quick assessment and I’ll recommend the best plan based on your goals, schedule, and training history.
Clear plan
A simple roadmap you can actually follow.
Progress tracking
Strength, reps, mobility—measured over time.
Safe technique
Move well first, then load it up.
Simple process. Serious results.
How coaching works
A clear step-by-step system—so you know exactly what to do, why you’re doing it, and how progress is measured.
Step 1
Assessment
Goals, movement, training history, and lifestyle—so your plan fits you.
Step 2
Programming
A structured plan for strength, mobility, conditioning, and recovery.
Step 3
Coaching
Hands-on cues or remote check-ins with technique feedback and adjustments.
Step 4
Progress
Track lifts, movement quality, and consistency—then level up the plan.
Ready to start?
Book your assessment and get a clear plan for strength, mobility, and body composition—built around your schedule.
Real people. Real results.
Client success stories
Consistent coaching, clear programming, and measurable progress—here’s what clients are saying.
Stephen Moye, Stanford Volleyball athlete
“Jason Kahn provides amazing personal training in El Segundo California that is specific to each of his clients’ needs. His first priority is always his clients, especially their safety. Jason Kahn has helped me train specifically for volleyball, and he creates plans that help me improve my overall athleticism as well as direct applications to my sport. I would recommend his training to anyone with any ability level. He will definitely make a difference in your fitness”
Andrew Keefer, TCU Baseball athlete
Jason helped me immensely early in my career teaching me the foundations of strength and conditioning and how to properly perform certain lifts to give me the best results while keeping me free from injury. Jason helped me increase my strength, power and mobility… all of which are very important to me as a baseball athlete. If you’re looking to improve your sport or just look better and get stronger go see Jason at JK Physical Culture .. …you won’t regret it!”
Norm Laird
Jason has helped me enormously in meeting my goals as a competitive cyclocross racer. He created a strength training program specifically designed to the demands of my specific cycling discipline. He worked with my time constraints and specific needs to develop a program that would work best for me. Thanks again Jason!!!
Joe Buys-Dream Impossible
I’ll try to keep this short.
If you’re looking for someone in the El Segundo and surrounding areas who has not only spent
years upon years (like 20+) perfecting his craft in health and fitness, but CONTINUES to do
so daily — Jason is for you.
From strength, fat loss, lean mass gain, flexibility, mobility and overall health and
nutrition, this is your guy. Extremely knowledgable, easy to work with and won’t be afraid
to say, “no, I don’t agree with that and here is why. This is why I believe it doing it this
way. Here is the research and science behind it” He’s a man of strong convictions.
Convictions there to help others around him. All while ready to take advice and insight from
others around him.
Overall, just a good dude with a solid sense of humor who’s really fun to be around.
Ps – When you guess his age…you’ll probably get it wrong. Just sayin’. ;o)”
Rated 5 stars by committed clients
One-on-one attention. Clear structure. Long-term results.
Meet your coach
Strength coaching that’s practical, safe, and built to last
I help beginners and experienced lifters train with better technique, smarter programming, and real accountability. The goal is simple: get stronger, move better, and build a routine you can keep.
CSCS® / NSCA-CPT®
Evidence-based coaching standards and safe training practices.
Technique-first
Learn the “why” + proper execution so you train with confidence.
Progress tracking
Clear metrics so you can see improvements week to week.
Local + remote
Train in El Segundo/South Bay or get coached anywhere online.
1-on-1 Coaching
Personalized, not generic
Technique & Progress
Lift smarter, not harder
Efficient
Time-smart sessions
Coached
Cues that click
Sustainable
Built for long-term
Quick answers
Frequently asked questions
Everything you need to know before getting started.
Who is personal training best for?
Beginners who want confidence with technique, experienced lifters who feel stuck, and anyone who wants structured coaching, accountability, and safe progress.
Do you train beginners?
Yes. You’ll learn safe setup, proper form, and how to progress without feeling overwhelmed by equipment or routines.
Where do sessions take place?
In El Segundo or at your location in the South Bay area. Remote coaching is also available for anywhere.
How do you personalize the program?
We start with an assessment, then build a plan around goals, mobility, schedule, and recovery—updated as you progress.
Do you help with fat loss?
Yes—through training structure, consistency, and sustainable habits. If needed, I can recommend nutrition professionals.
How do I get started?
Book an assessment, tell me your goals, and we’ll choose the best plan—1-on-1, mobility class, or remote coaching.
Still have questions?
Send a message and I’ll help you pick the right path for your goals and schedule.
Get in touch
Book your assessment or ask a question
Tell me a bit about your goals and schedule. I’ll help you choose the best option—personal training, mobility class, or remote coaching.
Location
El Segundo & South Bay
On-site or remote
Availability
By appointment only
Flexible scheduling