Before I joined Grinders about 3 years ago I was bored and about to give up on my workouts. Grinders has THE BEST trainers, my fellow Grinders are family and the workouts are never the same but...
Grinders Fitness
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Grinders Fitness is a boxing, kickboxing, and MMA gym located in Northglenn, CO. They offer a variety of classes taught by experienced coaches, including fitness boxing, kickboxing, Brazilian Jiu Jitsu, and striking technique. With a focus on pushing individuals to their limits and helping them reach their fitness goals, Grinders Fitness provides a supportive and tight-knit gym family for all fitness levels.
The gym is led by head coach Albert Rosales, who brings over 15 years of combat sports experience and provides intense workouts with detailed instruction. Shannon Sinn, a professional fighter, offers challenging classes for individuals who want to push themselves beyond their comfort zones. Other trainers, such as Tayler Sprowl, Kurtis Evenson, and Angela Wendlowski, bring their own unique expertise and passion to the gym, creating a diverse and motivating environment for members.
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Reviews
I have been a member of Grinders Fitness since before it was known as Grinders and started in the old Karl's Dairy building. Shannon and Albert have been amazing trainers. They're always...

I came to to Westminster, CO for a couple months of training and I was looking for MMA gym. I am beyond happy I step into Grinders Fitness. The coaches are motivating, respectful and genuine...

My workouts mostly used to be weight training and running. Working out here will push you past any plateau your stuck at. The trainers help with you with anything you need. It's always clean and...
Their classes and workouts are great! I have been sporadic in my 1.5 years of membership. I have been consistent the last few months, but upon my return it seems there are clicks and only a few...
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