Personal Training

Will has been a personal trainer and group exercise instructor in San Francisco since 2012. His specializations include bodybuilding, weight loss and mobility improvement. He believes that lasting fitness goals are achieved by incorporating training and exercise that a client enjoys, so each of his clients receive individualized programs relevant to their goals, fitness history and lifestyle.

Will aims to make all of his clients more capable and independent on the gym floor, so he emphasizes technical precision and safety at all times. Although he's a firm believer that training should be fun, when it's time to start the session, the work to reach your goals begins.

Contact Will Today!

Roberta’s approach combines evidence-based training with a strong focus on functional movement, injury prevention, and long-term sustainability. Whether you’re new to fitness, returning from an injury, or looking to break through a plateau, she meets you where you are and builds a plan that fits your goals and lifestyle.

Known for her supportive yet motivating style, Roberta creates an environment where clients feel challenged, encouraged, and empowered. She emphasizes proper form, smart progression, and consistency—helping clients not only see results, but maintain them.

In addition to one-on-one training, Roberta brings energy and structure to her group classes, making them both effective and engaging. Her goal is simple: to help every client leave each session feeling stronger, more capable, and motivated to keep going.

Veronica is a dedicated Personal Trainer, Pilates Instructor, and Wellness Coach passionate about helping individuals build strength, confidence, and lasting healthy habits. With a degree in Fitness, Nutrition, and Wellness, along with multiple certifications in personal training, nutrition, and wellness coaching, Veronica takes a personalized approach that supports clients at every stage of their fitness journey. Her coaching style combines education, accountability, and encouragement to help clients achieve sustainable results while improving their overall quality of life.

Specializing in strength training, Pilates, functional movement, weight management, and wellness coaching, Veronica believes fitness should be both effective and empowering. As a multi-year Sonoma Valley People’s Choice Award winner for Best Personal Trainer, she is committed to creating a welcoming environment where clients feel supported, challenged, and inspired. Whether your goal is to lose weight, build muscle, improve mobility, or simply feel better in your body, Veronica is dedicated to helping you become the strongest, healthiest version of yourself.

As a specialist in Corrective Exercise, Strength & Conditioning, Weight Loss, Wellness Coaching and Nutrition, Anthony designs customized programs that go beyond simple workouts. Whether your goal is building muscle, losing body fat, improving mobility, preventing injuries or simply feeling your best, every plan is tailored to your individual needs and lifestyle.

Anthony believes true transformation comes from consistency, proper movement and a balanced approach to training and nutrition. My goal is to help you move better, get stronger and build habits that support long-term success—not quick fixes.

With over four decades of experience, Malik Seaborn has the knowledge and hands-on experience to help anyone reach their fitness goals. He is a certified personal trainer; body building specialist; corrective exercise specialist; strength and conditioning specialist; and nutritionist.   While he has a background in powerlifting and cross training, Malik also has an invested interest in those recovering from injuries or looking to overcome mobility issues. His passion lies in creating personalized workout plans that motivate and inspire. He has an empathetic approach to those who have struggled to find the right fitness program that fits their lifestyle and works cooperatively to uncover the best path forward to reach attainable goals. Malik is the ideal trainer for those trying personal training for the first time or those who have tried it in the past without seeing the results they had hoped.

Brandon believes fitness should be approachable, individualized and sustainable. As a NASM Certified Personal Trainer and Corrective Exercise Specialist, he specializes in helping clients build strength, improve movement, reduce pain and gain confidence both inside and outside the gym. Whether you’re just beginning your fitness journey, looking to improve athletic performance or navigating health conditions such as Parkinson’s disease or multiple sclerosis, Brandon creates customized training plans designed to meet you where you are. His goal is to make every session challenging, supportive and focused on helping you become stronger than you were yesterday.

Stephanie Kerkechian is a certified personal trainer, fitness instructor, nutrition coach, self-defense instructor, and Piloxing Master Trainer with a background in dance and law enforcement. Since 2007, she has inspired and coached individuals of all ages, stages, and fitness levels through personalized training and dynamic group fitness classes. Her mission is to help people build strength, confidence, and healthy habits while creating a positive, supportive, and results-driven fitness experience.

Heather has been a dedicated group fitness instructor and personal trainer in Sonoma County since 2011. Specializing in strength, mobility, flexibility, and circuit training, she takes pride in being an integral part of her clients' wellness journeys. Heather’s coaching philosophy centers on education and body awareness; she ensures every movement is performed with proper form while teaching clients exactly how their bodies are working.

A firm believer that exercise is just as vital for mental health as it is for physical well-being, Heather designs workouts that challenge clients while keeping the environment fun and engaging. With her supportive approach, clients don't just work hard—they look forward to every session.

Jack has been a certified personal trainer since 2015, and started his training career with MX3 Fitness. He believes that the best workouts are varied workouts. Whether you are looking to gain mass, build overall strength or lose weight, Jack never skips the cardio, weaving it into each workout so you walk away feeling your entire body has benefitted, not just one muscle group. This holistic approach to training strives for not just fitness, but overall wellness.

Jack grew up in Ukiah, a short 2 hours north of San Francisco. His appreciation for fitness began during his four years on the varsity swim team. A fitness fanatic himself, Jack loves running, lifting weights and high-intensity training.

Contact Jack Today!

Leslie is a fitness professional and holistic wellness coach with over 20 years of experience as a personal trainer and group fitness instructor. As a lifelong athlete with a background in multiple competitive sports, Leslie believes wholeheartedly that movement is a necessary component of physical and mental wellness and personal expression.

After discovering her love for the barbell in high school, at a time when you would find very few (if any) women in the weight room, Leslie is dedicated to creating safe and empowering spaces for individuals of all backgrounds and stages of life. She loves Powerlifting, Olympic Weightlifting and Kettlebell Sport.

Her approach to training relies heavily on the fundamentals of functional training and improving biomechanical efficiency, incorporating movements from the activities of daily life that are unique to each individual. She aims to be adaptable with her programming to help find the types of exercise, nutrition and lifestyle changes that are exciting, manageable, and shape a path to achieve her client’s goals. Her sessions are fun, yet challenging, educational, and, most importantly, effective.

 

Contact Leslie Today!

Prior to entering the fitness industry Joe spent five years in finance, but he always felt his strongest and most confident in the gym or on his yoga mat. Joe coaches and educates his clients that exercise is just the tip of the iceberg as his training style and philosophy incorporates a holistic perspective of movement, mindfulness and nutrition in order to help others understand their own unique bodies and realize their ideal lifestyle.

Joe is Certified Personal Trainer through the National Academy of Sports Medicine, PN Level 1 Certified through Precision Nutrition as well as a 200-Hour Registered Vinyasa Yoga Teacher through Yoga Alliance. In addition to personal training, Joe is also a group fitness instructor having taught at Pinterest, Under Armour, Atlantis Events, The Assembly, Love Story Yoga, Orangetheory Fitness, Wheel House, and Rogue & Saint Fitness.

Contact Joe Today!

AJ has a bachelor’s degree in kinesiology, which gives his approach to fitness an emphasis on human movement and exercise science. His belief is that the human body is a unique machine capable of adapting to whatever challenges are presented, particularly during workouts. AJ designs fitness programs that are influenced by biomechanics, as well as cognitive and motor functions. His training approach is a blend of core and strength training along with stability and circuit training.

AJ focuses on teaching his clients to listen to how their bodies move, not only to become more connected but also to become aware of how to enhance their bodies through physical activity. He strives to help his clients find the same passion for fitness and movement he has developed through his own fitness journey

Contact AJ Today!

Nina started her fitness career as a group exercise instructor and personal trainer back in 2016. Her driving focus at the time was to find ways to bring better fitness disciplines to in-office professionals who often don’t have the time for an active lifestyle – including herself, a former biotech project manager.

Through her deep understanding of that environment, she creates realistic, fun and rewarding programs for her clients that are always challenging, but also feel within reach. Variety is a critical component to Nina’s workouts, as she looks to activate a wide range of muscle groups, not only stimulating weight loss or muscle growth, but also better posture, balance and overall endurance.

Contact Nina Today!

Ellen comes to MX3 Fitness with more than 12 years’ experience as a personal trainer and strength coach with a focused background in kinesiology, sport fitness and bodybuilding. She is a firm believer that working out should be both fun and enlightening for her clients, helping them get to their fitness goals by making them really want to go to the gym (remember, she said this should be fun!). She is energetic and passionate about fitness and that is reflected in her workouts. 

Ellen incorporates a true 360 degree approach to training, incorporating mobility, flexibility, strength training, core strength and cardiovascular programming to create a comprehensive program to match each client’s goals. Whether you are training for a specific sport or just looking to get moving after a long day at work, Ellen uses her experience and knowledge to create lasting change for anyone wanting a happier, healthier quality of life.

Contact Ellen Today!

With over a decade of experience in the fitness industry and a lifelong background in athletics, martial arts, dance, music and performance, Daniel brings a unique, holistic approach to movement. He believes that fitness is more than just exercise; it's a skill that, when mastered, leads to significant improvements in strength, body composition, athletic performance, and muscle mass. By emphasizing breath control, proper mechanics, and muscular efficiency, he helps clients develop a deeper connection with their bodies and empowers them to take charge of their fitness journey.

Specializing in Corrective Exercise and MMA Conditioning among other modalities, Daniel has worked with a diverse clientele, including group classes, seniors, and combat athletes. He combines conventional training with innovative techniques like Dynamic Tension and Indian Clubs to optimize movement, enhance performance, and prevent injury. He is passionate about guiding those who view fitness not just as a goal, but as an evolving practice that transforms both body and mind.

Especializado en Ejercicio Correctivo y Acondicionamiento para MMA, Daniel ha trabajado con una amplia variedad de clientes, desde adultos mayores hasta atletas de combate. Su método combina entrenamiento convencional con técnicas poco comunes como la Tensión Dinámica y los Indian Clubs para optimizar el movimiento, mejorar el rendimiento y prevenir lesiones. Su pasión es guiar a quienes ven el fitness como un proceso continuo que transforma tanto el cuerpo como la mente.

Contact Daniel Today!