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Gritbox Fitness

Gritbox Fitness

Gritbox Fitness combines the high-intensity and therapeutic power of kickboxing with the transformative results of strength training into a fitness experience like you’ve never seen.

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new & improved app

Never miss a beat with the new Gritbox app, available now!

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Unleash your inner badass with kickboxing and strength training. Located in the heart of Downtown Charleston and South End Charlotte.