Our Trainers

David Park
Boxing

David is the head coach of The Park Gym. He has trained with Brian Viloria, WBO and WBA Flyweight champion, won the WBC Light Flyweight and IBF Junior Flyweight titles. He has also trained with Freddie Roach. His main trainer was Renee Arredondo. WBC Jr. Welterweight champion. David is also CrossFit Level 1 certified, and a 6th Dan in Tae Kwon Do.

Jeremy Avilla
WOD / Olympic Lifting

Jeremy is strong, very strong. He is our Fitness Coach and our resident Power Lifting expert. He is a fierce Power Lifting competitor as well as a very knowledgeable and great programmer. Jeremy is very passionate about teaching and has been here from the start.

Juan Valencia
WOD / Olympic Lifting

Juan is a Certified Crossfit Level 2 Coach! He teaches constantly varied functional movements performed at a high intensity so members are prepared for whatever life has in store. Whether that be lifting your child and groceries with one arm, or being prepared for the next zombie apocalypse!

Valerie Lo
Boxing / WOD

Coach Lo has made teaching her career. Not only is she one of our great female boxing coaches; she is also a professor at USF. She has fought as an amateur, representing The Park Gym. Coach Lo is the epitome of brains and brawn.

Austin Tam
Boxing

Austin is our boxing head coach. He has started here at The Park Gym since it opened. He continues to strive at giving everyone the best technique and boxing lessons. He is also active and still competing in boxing.

Mike Witbeck
Boxing / WOD

Mike has been training and coaching with David Park since 2010. He is among our most patient and attentive trainers. Besides boxing he is experienced with Eastern and Western Swords, as well as the application of fire to weapons.

Arthur Gaus
Boxing

Coach Arthur started and has competed all thru college and beyond. He has extensive experience in boxing. A fierce and dedicated boxer, Arthur is always ready to help and guide anyone in need.

Sylvie Lerner
Boxing

Sylvie is a certified USA Boxing Level 1 Coach . She is originally from Denver where fitness and outdoor activities came second nature. She believes she was destined to box, as her childhood nickname is derived from Sylvester Stallone. Sylvie loves long combo mitt work, wall balls and getting to know people, so if you see her please say hi!

Joon Yi
WOD

A strong believer of functional fitness, Joon is committed to changing how people view fitness and themselves. He has participated in various sports all his life, and is the resident Strength and Conditioning Coach at the Park Gym. He’s had mentorship and trained with Power Athlete HQ, and Crossfit Games Athlete Chyna Cho and Freddy Camacho.

Front Desk Staff

Alexa Martinez

Front Desk

Janoah Magloach

Front Desk