Jack MillerCoach

I was born and raised in Solano County, and have lived in Vacaville for over 17 years. I love spending time with my two kids and two cats. I also enjoy softball, surfing, cooking, and reading. I’m all about personal growth and overcoming fears, so CrossFit was appealing to me. I wasn’t satisfied with the results I was getting in the gym and needed to do something new with my fitness to reach my goals. I tried many personal trainers, but none were the right fit, and I still was not seeing results. I needed someone to be there and hold me accountable during the workouts and tell me what to do. Each trainer session was costing me $50+, and it was starting to add up. A friend mentioned I should try Crossfit, I walked in and talked to Andy. My initial thought was wow this is a lot of money for membership, but Andy explained the value in the cost (always having a coach available, community, etc.) When you compare the cost of paying a gym membership AND a personal trainer to a Crossfit membership and the value received, it’s a no-brainer. My first workout I walked in thinking I was in pretty good shape, I was wrong! I decided to commit for six months, and now, two years later, I am stronger than I have ever been and have a passion for life beyond anything I could have imagined.Crossfit has helped me believe more in myself and my abilities, to dream bigger. It’s given me endless amounts of energy to keep up with my kids and to do more in life. I’ve never been big on weightlifting and always thought it would just make me big and bulky. One of my initial goals was to lose weight, but one day Andy said I should focus on getting stronger, and the weight will take care of itself. Working with Andy on proper weightlifting technique has opened my eyes. To this day, I still get emotional about it! It was one of my pinnacle moments in Crossfit. Another moment I had was during one of the workouts, not sure which one. But I had reached a wall and was about to give up. Two people came alongside me and finished the workout with me, even though they were already done! After I had completed the workout, I had to walk outside because I was so overwhelmed by what I had just done and the support I received (I couldn’t stop crying!! Lol) It’s the next best thing to being part of a good church because of the community here. Everyone is encouraging and supportive. You just won’t find that in a gym.

I eventually decided to become a trainer at CrossFit Vacaville, so I could help people get better and reach their fitness goals. Seeing a member reach and exceed personal goals, or learn new skills gives me satisfaction as a trainer. There is something special that takes place when a person has a breakthrough, and I love being a part of that experience. I believe in all aspects of life you should always have someone in front of you (a mentor or coach) and someone behind you (mentee), as it is foundational to personal growth.

For anyone interested in CrossFit, but too afraid to try it, don’t listen to the naysayers. Try it out for yourself first, then decide. If you show up consistently and apply the tools, I guarantee it will change your life.

Nutrition plays a HUGE role in my fitness and health. Having Marcia, a certified nutritionist on the team is absolutely priceless!

Great people, great staff. An environment designed to change your life for the better!


  • CrossFit Level 1 Certified