Meet the Trainers


Schedule a Free Personal Training Consultation

CLICK HERE to tell us a little about yourself.
You will be contacted by our Personal Training Manager within 24 hours.


Brady Harris

Brady Harris is a personal trainer specializing in strength training. He is a big advocate for and believer in hard work and seeing the results from the weightroom transfer over to improve everyday lifestyle. A former student athlete (Baseball) in college, he studied Exercise science with a minor in coaching. After college he joined up with a college friend and teammate to open the Factory Fitness Center in Washington state, where he trained and coached for five years. Fitness and an active lifestyle have always been a core part of his identity and he hopes to share his wealth of knowledge with
Flex members and clients.


Charise McCondichie

Charise designs workout programs for her personal training clients that are both High Intensity Interval Training (HIIT) or low impact workouts, resulting in major body transformations, weight loss and muscle building, using dumbbells, kettlebells and bodyweight exercises. She helps clients to focus on correct form and technique.

Charise spends part of her days as a kickboxing trainer, teaching fight combos to get her clients in shape, while they learn self defense moves. She welcomes all fitness levels and non-fighters interested in learning how to train as a kickboxer, using focus pads, thai pads and heavy bags.

Charise is a member of the International Sports Sciences Association (ISSA) and currently runs 9ROUND Kickboxing Fitness studio in Emeryville. Her personal training clients include active military professionals, athletes (including former NFL and boxing athletes) and working professionals. Trained by professional powerlifter/CrossFit athlete and amateur MMA competitors, her experience can help you get stronger, feel more confident and have fun with your fitness.


Christopher Mullins

Christopher Mullins

Christopher Mullins is more than a personal trainer; he’s your guide to a vibrant life. With a deep- rooted love for nature, Christopher harnesses the power of natural movement patterns to elevate your well-being. As a NASM-certified trainer, Christopher believes in meeting clients “where they’re at.” He combines compassion with pragmatism, tailoring each fitness journey to your unique needs. Whether you’re a beginner or a seasoned athlete, he crafts a personal roadmap to success. Christopher’s contagious positivity infuses every session. As you work together, you’ll discover a newfound energy, resilience, and joy. Because health isn’t just about physical strength; it’s about happiness too.


Jennie Votel

As a personal trainer and health coach, my goal is to help my clients achieve better health and fitness, both physically and mentally. By providing guidance, support, and motivation, I team up with my clients to transform their lives, achieve their wellness goals and ultimately help them become their best version of themselves.

My experience as a mom of two teenage boys and a business owner allows me to understand the time challenges my clients confront when trying to achieve their health and fitness goals. By understanding these challenges, I can design programs and goals that make them feel successful in all aspects of their wellness journey.

I truly believe that movement is medicine and I love seeing my clients make that connection as well. I am excited to be offering training at FLEX.


Jonathan Devoto

Jonathan Devoto

Jonathan Devoto is a NASM-certified Personal Trainer & Corrective Exercise Specialist, FRC-certified Joint Strength & Mobility Specialist, and CAMTC-certified Massage Therapist. Specializing in injury reduction & rehabilitation, he combines these modalities to help clients improve strength, mobility, neuromuscular function, and overall embodiment. Outside of work, Jonathan is a life-long tap dancer, enjoys practicing chi-gong, hand-balancing, and spending time in nature. .


Nicole Cosares

Nicole Cosares

As a certified personal trainer and lifelong athlete, my goal is to push my clients to be exactly where they want to be on their fitness journey. Being a TRX trainer, strength and conditioning coach as well as high intensity interval training(HIIT), whether your goal is to lose weight and get in better shape, or strengthen and condition your body, I’m your girl!


Bruce Cannon

Bruce Cannon

Bruce has a been in the athletic industry since the early 80’s. A physical education major at Sacramento State where he competed in Cross-Country and Track graduating in 1991. He’s competed in track events from 400 meters to 50 miles. With a coaching background in running, baseball, basketball and softball, Bruce has been a 2-time winner of Coach of the Year – Positive Coaching Alliance for Pleasant Hill Baseball Softball Association. Utilizing NASM training to expand his knowledge with additional training in Nutrition and TRX. He believes in focusing on form to build strength and endurance, while creating programs in and outside the gym. Bruce’s favorite activity is spending time with his two incredible kids and sharing time with special people in this life.


Shaina Seidenberg

Shaina has a BA in dance from UC Irvine, is a certified personal trainer, yoga instructor, and behavior change specialist. She has extensive experience instructing in various settings. Shaina takes a holistic approach and likes to include lifestyle and nutrition coaching while working with clients as a personal trainer. Her specialties include general movement assessment and coaching, and strength and conditioning improvement.


Schedule a Free Personal Training Consultation

CLICK HERE to tell us a little about yourself.
You will be contacted by our Personal Training Manager within 24 hours.