UGF has truly transformed fitness for us, from energizing group classes to personalized 1:1 sessions with Yo. The coaching team (Mike, Yo, Alex, and Ashley) create a friendly, inspiring space that...
Underground Fitness
(72)
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Underground Fitness is a local gym in Union City, CA that offers a variety of workout equipment and fitness classes.
With a focus on providing a welcoming and supportive environment, Underground Fitness aims to help individuals reach their health and wellness goals.
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Reviews
If you're looking for a place to work out that is supportive and will ensure that your form is correct. This is the place. The coaches are all amazing and really care about their clients,...

I've primarily worked out with Yo for the last 6 months, from private trainings to classes. I was daunted about going to a "real" gym, with things like large tractor tires and metal weight...
This review is long overdue. It all started with me just wanting to find a place to workout so I can lose some weight for a trip. Now, almost three years later, I'm still here along with my...
UGF has been nothing short of life-changing. The instructors here aren't just trainers; they're motivators who genuinely care about your progress. They consistently encourage you to push your...