Copyright © Core Fitness

Doreen Keller

Coming Soon

James Lang

Coming soon

Michelle Matule

Coming Soon

                       Jon Williams (owner)

I have owned Core Fitness South Bay  Training Center for 9 years and I have been training for almost 20 years. I have spent time in different gyms as a fitness manager as well as a strength and conditioning coach for the Milwaukee Brewers. Being born and raised in the South Bay, I have a passion for helping clients reach there fitness goals. Whether its losing weight, gaining weight, or just feeling better about themselves.


I am certified by the Nation Academy of Sports Medicine.

​Personal Training, Performance Enhancement Specialist, Correctional Exercise Specialist and TRX Certified.