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Our customized programs will get you the results you're looking for!

The Firm fitness

Change Your Life

Welcome to The Firm Fitness

Sometimes there are just not enough hours in the day to take care of yourself. With work, family and social engagements, how do you make time for lifting weights, cardio, stretching, shopping right and preparing healthy meals?
We are here to help!  All you have to do is show up and we take care of the rest. We will take you through a comprehensive assessment and goal strategy session. Your workout will be designed by one of our nationally certified instructors and will be customized for your fitness objectives.  We will make obtaining the body and fitness goals you want more efficient, so you can get more out of life.


Our Fitness Services

Jumpstart Your Health

Getting in shape shouldn’t be a punishment. It’s an amazing and empowering lifestyle decision that anyone can achieve. We believe in finding the pleasurable side of fitness, and while there may be a sore muscle or two along the way, the amount of fun and levels of energy you will experience will far exceed the discomfort.

Semi-Private Training

Feel Good, Look Good

Get all the benefits of having a personal trainer at under half the cost by working out in small groups of 1-4 people.  Each workout is tailored to your goals and needs, and every 6-8 weeks we do a reassessment and you receive a new workout.  This allows our members to continue to make progress, and stops the boredom that can occur from doing the same stale workout each week.


Group Fitness Classes

Strength & Stamina

Included in all of our memberships are our highly effective and energetic group training classes. Our classes are about team spirit and motivation. These are the perfect supplement to our semi private training sessions. This is where our members focus on their cardio and reinforce the Core Fundamental Movements.  Get your metabolism fired up with one of our instructors and our unique training equipment including: sand bags, kettlebells, sleds, battle ropes, TRX and medicine balls.

Kids Conditioning

Core Strength & Injury Prevention

Our Kids Conditioning Classes provide a safe and fun way for your video gamer to your college athlete to workout.  Our focus is on injury prevention, conditioning, building core strength and stability, and most importantly, fun!  With more kids specializing in a sport at an early age it is important to help them build the strength and stability to prevent injuries.  For the younger kids we provide a fun and challenging environment for them to learn core fundamental movements through different challenges and activities while allowing each young athlete to work at their own individual level. Exercise at a young age builds good fitness habits and can enhance cognitive function which can carry over to their school education.
For our young adult athletes, building power and strength must be achieved with an emphasis on stability and mobility. In order to prevent injury, teenage athletes have to be careful not to develop strength on top of disfunction.  Learning correct movement patterns and proper body mechanics is crucial for the sport specific athlete.

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Nutritional Counseling

Start from the Inside Out

Your relationship with food can improve your lifestyle, weight management, and overall fitness and performance.  
Whatever your specific or individual goals, our objective is your success in achieving them through our customized programs based on the science of proper nutrition.

Whatever your fitness needs, We're here to bring you results. Contact us for more details.

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JJ Miller

The Veteran

JJ Miller obtained his B.S. in Kinesiology from the University of Texas. He is a certified personal trainer through the American College of Sports Medicine as well as a Certified Functional Strength Coach. He has been a personal trainer for nearly 25 years. During that time he has worked with an extensive client demographic, including young aspiring athletes, post physical therapy patients, pre- and post-natal moms and weekend warriors. He has been working with clients in San Francisco since 1997.  Along with his wife, Andrea Miller, he founded The Firm in order to provide clients with a support team dedicated to helping them make a healthy lifestyle easier and more enjoyable.


Andrea Miller

The Woman Behind the Curtain

Andrea Miller has run health clubs for over 20 years, and has redefined what it means to "lift like a girl."  She is a big believer in building comradery and community within the club. She is the mother of three very active kids and is highly involved in their schools. She understands what it means to be a mother in San Francisco. She knows that life can get a bit hectic and the importance of getting some time for yourself to workout.  Along with her husband, J.J. Miller, she founded The Firm to create a friendly, social environment to stay fit and have fun doing it.


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Lan Tan








“Great things are done by a series of small things brought together”

Vincent Van Gogh

Bio Coming Soon


Contact Us

Just fill out the following information to get started! We always respond within 24 hours or less!

If you do not see a response, please check your junk mail.

You can also directly email us at or text us at 415-377-6667



225 Frederick St, San Francisco, CA 94117, USA


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