Ready to live healthier?


An up beat and positive atmosphere!


Increasing lean muscle mass is key to building a strong foundation. Most importantly, we teach proper technique to target the correct muscles

About Dynamic Grit Fitness

Dynamic Grit Fitness is a private gym studio that was established in February 2015. Its purpose is to provide a carefully thought out training program for people who want to be healthy and get into a great functional training and strength program.  Overall, our programs are designed for weight loss, toning, and building lean muscle. Join us and learn how to be healthy and strong. We believe in the 5 pillars of fitness: strength training, cardiovascular endurance, core strengthening, balance, and flexibility. By incorporating these components into our exercise program, we can provide long-lasting results. 

Dynamic Grit Fitness functional training techniques are organized in the most logical sequence to benefit our client’s needs in a fun and cooperative training environment. Our mission is to conduct our small group training classes and personal training gym sessions with the utmost concern for safety and client growth.  Also, this will ensure to optimize learning to suit an individual’s strengths and weaknesses. Furthermore, we expect clients to treat each other respectfully. Overall we do not only teach clients how to exercise properly but also teach our clients how to live healthy lives. It is important to understand the relationship between nutrition and physical performance, and we will discuss nutrition with you as you progress. Most of all, it is important to be healthy at all times.


Meet the Gym Owners

Owners, Mars and Kei, met in a commercial gym in 2011. Uniquely, the two found mutual respect through training at a high volume respectively. In short, our approach to training is to build a solid foundation, starting out with proper posture and a stable core.  Most of all, proper exercise execution and correcting muscle imbalances are key to building a great foundation for your body. Altogether, with our combined experience and attention to detail, we can help correct years of bad habits and long-lasting results.  

Mars Tiomico

Mars Tiomico


BA Business Administration
Cal State Long Beach

NASM Certified Personal Trainer
NASM Corrective Exercise Specialist
NASM Performance Exercise Specialist
NASM Golf Fitness Specialist
NASM Fitness Nutrition Specialist
NASM Weight Loss Specialist
NASM Senior Fitness Specialist
Precision Nutrition Certified Level 1                                              TRX Suspension Training Specialist                                            Boxing Fitness Institute Certified                                              Trained over 10k sessions
Master Fitness Manager & Trainer at
24 Hour Fitness Manhattan Beach
Assistant Fitness Manager Hermosa Beach

Kei Hashimoto

Kei Hashimoto


BS Kinesiology
University of Southern California

NSCA Certified Strength & Conditioning Specialist 
NASM Corrective Exercise Specialist
NASM Fitness Nutrition Specialist                                              NASM Youth Exercise Specialist                                            Functional Movement Screen Specialist                                      TRX Suspension Training Specialist                                                Boxing Fitness Institute Certified                                            Advanced Boxing Fitness Institute Certified                            ASFA Foam Roll Specialist                                                              Trained over 15k sessions                                                              Master Trainer 24 Hour Fitness                                              Recognized on Fitness Team Member Spotlight 2013

Bilingual in Japanese                                                                                      日本語でも対応できます


Our Services

Private gym services include: small group training, 1-on-1 training and online coaching.


Gym with a private setting

Small Group Training

Class sizes are limited to provide 1-on-1 attention to detail our clients deserve in our private gym. All in all, with our highly skilled trainers we are able to create a fun, yet challenging workout programs.

1-on-1 Personal Training

According to your fitness goals, our trainers will design an individualized program to help you reach your fitness goals. Furthermore, going over proper exercise execution and nutritional guidance, we will guide you along the way.

Online Coaching

Always wondered if there was an easier way to get a trainer? Well, now you can with our online coaching program.  Overall, have access to our exercise library and weekly check-ins with one of our trainers.


Working with our clients is our passion. Here are some photos of those awesome people in action!


*Check out for more reviews on Yelp

*Mars and Kei are fantastic trainers with tons of knowledge and will work with you no matter what fitness level you are at.

Kachina D.

*Although, it has been a battle, Mars kept me focused, educated, challenged, and pushed me when I needed confidence.

Mike E.

*DGF workouts are a great combination of personal training experience and exercising in a small group, which makes it a lot of fun.

Ksenia P.

*Mars has a vast inventory of training techniques and solutions for a better and fitter body. I have trained with Mars for two years and have consistently found him to be improving my agility and strength.

Peter M.

*Two years ago, I had bad checkups and doctors said that I was heading down a path of heart and blood problems. Today, I am running 5Ks and doing burpees. Never, ever thought I could do that.

Eric G.

Cancellation policy: if the class is canceled the same day, you will lose the class.

Get in touch with us. Have questions? Send us a message.

Be part of an upbeat and postive atmosphere in our private gym and get the results you are looking for. With our highly skilled trainers we are able to create a fun, yet challenging workout program.


(310) 374-7467




2423 190TH STREET

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