Mary Jambon-Corzine Owner/She.E.O

Born and raised in Southern California, Mary started her gymnastics career in Gymboree with her mom. She competed through to level 8 by the time she was a freshman in high school, then she went on to do varsity cheerleading, and competed professionally thereafter until she was 22. She’s done music videos and workout videos, she’s worked in the solar industry and the events industry, and now is the She.E.O. of GymJambon.

Keaton Davis Xcel/Recreational Coach

Some people also know this young man as “the Flips for Tips guy!” Sonoma grown, Keaton started his gymnastics career at 8 years old, as an athlete at REG in Petaluma, where he trained and competed through level 9 in the boys JO program. He is super enthusiastic not only to be back in the sport as a coach, but to bring gymnastics to his hometown, and give back to his community the same understanding, discipline, focus, and confidence that gymnastics taught him.

Chris “Coach Z” Zielewski

Coach Z comes to us with 5+ years experience in teaching gymnastics and parkour. He loves working with kids of all ages, and boasts a master’s degree in special education, making him great with neurodivergent little ones. You can find him bouncing off the walls in the Gymninja and gymnastics programs, or helping build new equipment for the gym. He’s also an avid gamer and loves goats.

Jessica Kunen

Formerly a rhythmic gymnast competing at the national level, Jessica is our other new coach! Her experiences come in handy with helping little ones learn to be graceful and poised while still having fun. A happy mama of two children, she’ll be teaching our baby and toddler classes. Coach Jessica also makes lovely jewelry alongside being an amazing coach.