The F5 Team
- Roxy VivienOwner & Team Leader of F5SXMT, SFG II, Pn1
Roxy Vivien began coaching in 2005 and has well over 10,000 hours of training experience. She is an ACE Certified Personal Trainer, Pn1 Nutrition Coach, and SFG II Kettlebell instructor. She founded F5 Strength and Muay Thai in 2011.
Roxy fought as a professional Muay Thai fighter for ten years. She was the first female fighter in the United States to fight a pro, five round, full rules Muay Thai bout, when she made her pro debut in 2009. Roxy's HL reel.
In addition to gym life, Roxy loves studying psychology, motivational interviewing, and marketing.
She volunteers in cat rescue and enjoys writing non-fiction and dancing to techno music.
- Nathan FosterHead Muay Thai Coach & Personal Fitness Trainer
Nathan, a NESTA & NCCPT certified personal trainer and NESTA Certified Muay Thai Fitness Coach, has always had a taste for extreme sports. Before discovering Muay Thai in 2012, he was a serious skateboarder a NESTA.
He began is Muay Thai training in 2012 under the guidance of Mark DeLuca at Yamasaki Academy. In that time he had an impressive 12 fights. He moved to Los Angeles in 2016 to coach full-time at F5 with owner, Roxy Richardson.
As the Head Muay Thai Coach at F5, Nathan shares his skills and experience freely with thoughtful attention to technique. He says Muay Thai helped him through many rough times in his life and molded him into a better person. He enjoys sharing his passion with others.
- Alex KaruStrength Coach & Personal Fitness Trainer, SFG I
For Alex, health and wellness have always been at the forefront. Growing up as a multi-sport athlete, he excelled in wrestling, competing at the collegiate level. He entered the fitness industry in 2012 in his native Jersey Shore area, mentoring with a renowned strength and kettlebell coach.
Alex moved to Los Angeles in 2015 where he now continues to share his ultimate love of health, fitness, and lifestyle coaching. In 2017, Alex obtained his SFG 1 certification, and is always continuing his journey of excellence in strength and fitness coaching.
His ultimate goal is to uncover the full potential of every student at F5 and to help them find true happiness through strength and beyond!
- Matt MorrisonStrength Coach & Personal Trainer
An Ace Certified Personal Trainer, Matt is a lifelong athlete competing in football, basketball, baseball, and track and field. He began weightlifting at an early age to improve his athletic performance and loves to help others reach their own goals and potential.
When he isn't in the gym, Matt can be found teaching in an after-school Shakespeare program, on stage himself, or sitting in his favorite chair watching Survivor with his two adopted cats.
- Eric AddisStrength Coach & Corrective Exercise Specialist, SFG I
Eric Addis, NASM certified personal trainer since 2010 was introduced to kettlebells and hardstyle training principles early in his career. Eric went on to attain his SFG1 kettlebell certification.
He has trained a broad range of clients including law enforcement, military, marathon runners, triathletes, and specialized populations like those recovering from or dealing with injuries.
- Amanda SunthonlapStrength Coach & Personal Trainer, SFG I
Amanda, is a NASM certified personal trainer and SFG I who has been active since she was a toddler.
While obtaining her Bachelor’s in Exercise Science, she was awarded a scholarship to play women’s soccer. Shortly after, she started lifting weights and fell in love with strength training.
Before deciding to pursue a personal training career, she worked in rehabilitation as an occupational therapist.
She has a big passion for health, fitness, and helping clients achieve their goals in ways that work best for them.
When she's not coaching at F5 you can find her drawing or climbing rocks.
- Anthony RistowMuay Thai Coach
Anthony started training Muay Thai in 2005 under Roxy Richardson and Chris Reilly. Over the years he has continued to improve his skills with regular training and sparring.
Anthony helps the F5 fight team train for their fights and teaches class on Monday nights. You will also see him lifting heavy around the gym, as he walks the walk and maintains an active lifestyle, even with his busy schedule of writing, teaching and bartending.
- Leks AoudMuay Thai Coach, Massage & Neuromuscular Therapist
Hailing from San Diego, Leks has been in athletics all of his life. He started with karate at five years old, then in high school he played football and ran track and field. He attended San Francisco State University and obtained a B.A. in Cinema Production.
Shortly after moving to Los Angeles, he was introduced to Muay Thai. His passion for training the sport grew quickly, and he decided to pursue a career in coaching Muay Thai so he could inspire others to learn the discipline and help them live balanced, active, healthy lives.
Leks is a graduate of the National Holistic Institute and is certified in both a neuromuscular therapy (NMT) and massage therapy (CMT).
Leks believes massage and body work to be an essential tool in maintaining physical well-being and nurturing athletic abilities.
- Ben YoshiwaraMuay Thai Coach
Ben started training Muay Thai in 2011 and quickly developed a love of the sport. He’s made sure to keep Muay Thai a part of his life ever since, training at various gyms in Boston, San Francisco, San Jose, and now, Los Angeles.
Wanting to entrench himself in the community further and spread his enthusiasm for the art, he started his coaching career at F5.
Outside of the gym, Ben is a software developer and co-owner of the creative technology studio BENBENBEN.
- Dustin ShawCo-Owner, Assistant Fight Team Coach
Dustin Shaw, co-owner of F5, helped get Roxy Richardson’s vision for F5 off and running in 2011. A lifelong athlete, Dustin competed in swimming, judo, wrestling, water polo, and Jiu Jitsu. In 2009 he met Coach Roxy and discovered a passion for Muay Thai. He competed in a handful of Muay Thai fights and with his hawk-eye for fighting technique, he is vital to the training camps and corners of F5 fighters.
In 2017, Dustin earned his black belt under Rubens Cobrinha Charles after over 15 years of Jiu Jitsu training and competition.
Today, Dustin works as a brand ambassador for a Nomadic distillery. He also enjoys photography, music, and cats.
- Jon HoOffice Manager
Jon began his journey at F5 as a student. When the position of full time Office Manager opened up he decided to merge his passion for Muay Thai with his expertise in customer service and communications.
Jon graduated from the University of San Francisco with a BA in psychology. A life long student of martial arts, he started training in karate at age four and understands how to balance his love of kicking things with his desk job. He enjoys making F5 a fun, well organized community to train at and supporting its members with excellent customer service.
When he’s not answering phone calls and returning emails, Jon enjoys playing video games, working out with the F5 team, and eating ribs.
- Dylan EspositoAssistant Office Manager
Dylan loves getting supporting the gym with her office, communication and organization skills. When she’s not working or training for her own fitness goals she loves being a creative person. She enjoys singing, writing, and drawing.
Originally from Hawaii, she fell in love with Los Angeles and found her new home at F5. She enjoys kettlebell snatches, powerful Muay Thai body kicks, killer hooks and being in a positive like minded environment.
F5 also made her a cat person and she has a rescue kitty of her own, Sammie.
- Tyler SchaefferFounding Strength Coach '11 - '17
Tyler helped build F5’s strength program from its humble beginnings in 2011. Although he is retired from coaching and currently resides in Omaha, Nabraska where he owns a bar, he forever resides on our website for all his hard work, loyalty, proof reading, and mediocre jokes he gifted the F5 community.
During his time at F5, he was a Certified Strength and Conditioning Specialist (CSCS) by The NSCA, a USA Weightlifting (USAW) Level I, and SFG II Kettlebell Instructor.
- Freddy & Jason