Training Experience :
Specialty : MMA, BJJ Boxing, Kickboxing, Strength Training

Sean Crenshaw joined the Dynamix Team in 2012, immediately training in all of the components of Mixed Martial Arts—Jiu Jitsu, kickboxing, and wrestling— and significantly improving his complete MMA game, all while building his resume as a strength coach. One of the most hardworking members of the team, his drive, discipline and natural toughness, but also his amazing selflessness, developed him quickly a reputation within the team, which led to his honorable nickname; “Lionheart.” 


  • Blue Belt in Dynamix Kickboxing
  • Purple Belt in Jiu-Jitsu
  • Certified Personal Trainer, ISSA 
  • Certified Bioforce Conditioning Coach

Born:  Glendale, California. 

Started training: in 2004, Golden Eagle Martial Art in Newbury Park.

Competition experience: Sean Crenshaw started competing in kickboxing smokers in 2005 and continued to compete in amateur MMA and Muay Thai.

Accomplishments: Sean received a BS Degree in Business. He was promoted to Purple Belt in BJJ in 2019, was promoted to Purple belt in the Dynamix Striking System in and is a Certified Personal Trainer through

In his own words: “I want to be the best well-rounded martial artist I can be. I like teaching people how to fight, because I know it will give them confidence in their lives. Confidence comes with training. It is gained by discipline, perseverance and having a positive attitude”

Meet Other Trainers

Working from home meant we could vary snack and coffee breaks, change our desks or view, goof off, drink on the job, even spend the day in pajamas

AJ Barnala was literally Dynamix’s first student and has been training with us since the gym’s grand opening in 2010. From the start, AJ has immersed himself in all aspects of MMA—training Kickboxing, Jiu-Jitsu and Wrestling—while at the same time also focusing on personal development. The gym has grown quite a bit since the early days, and not only has AJ grown alongside the gym, but has also played a big role in the growth process. He was amongst the first group to receive their Blue Belt in the Dynamix Striking System, and the first to be trained to teach the Dynamix Striking System under head coach and the system’s founder, Antoni Hardonk.  
  • Dynamix MMA’s first student/ Longest
  • Blue Belt in Dynamix Kickboxing
  • Purple Belt in Jiu-Jitsu
Born: Chandigarh, Punjab, IndiaStarted training: At the age of 12 Competition experience: Muay Thai tournament Accomplishments: AJ Barnala moved from India to the US when he was only 23. On his own, he made a life for himself in CA. He was promoted to Purple Belt in BJJ in July of 2019 and has been an instructor at Dynamix MMA since 2013.In his own words: “I want to keep improving as a martial artist and want to continue to compete. I enjoy teaching because it allows me to see the growth in my students. I’ve had an opportunity to train under the greatest coaches in kickboxing, BJJ, and wrestling and I would like to pass that onto my students.”