Grizzly Gym
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At Grizzly Gym, every member of our staff of instructors is both fully certified to teach, and additionally has significant in-ring experience. Most of our instructors have held national championships; the head instructor has competed more than 250 times in over a dozen countries around the world. And the difference that level of experience makes in the instruction you receive is priceless.

Mike Martelle is Kingston Ontario's only Black Belt in Brazilian Jiu Jitsu and certified Master Instructor of Muay Thai! Grizzly Gym's 2,000+ square foot facility provides men's and women's change rooms, professional mat space, a variety of heavy bags, pads, and all the equipment you'll need to train with us and have the workout of your life!
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Brazilian Jiu-Jitsu is a sophisticated martial art and sport with an emphasis on close-quarters grappling, submission holds, and self-defence on the ground. Emphasis is placed upon the science of human combat, employing a knowledge of leverage and kinetics to allow a smaller person to defeat a larger opponent.
Not to be confused with either Western kickboxing or the current craze of "Tae Bo"- style cardio workouts, Muay Thai is the national sport of Thailand with a history that dates back at least several hundred years. The earliest records of Muay Thai's origins were lost when the Burmese army sacked the Thai capital of Ayuddhaya; however, it is known that it was used as a training method for the Thai armies by the 1500's.
Believed by many to be the oldest of all martial arts, Shaolin derives its name from the Buddhist Temple in which it was said to have originated. Originally a means of training monks for fitness and for the defense of their beliefs, Shaolin eventually spread throughout the Chinese countryside and developed into a variety of different styles.
T'ai Chi Ch'uan, or "Grand Ultimate Fist" in English, is a martial art that originated in China during the 13th century. In recent times it has gained international notoriety as an attractive form of gentle exercise, characterized by it's slow and graceful movements. It is often described as "moving meditation", and is an excellent means of promoting stress reduction and overall physical health.
At Grizzly Gym, every member of our staff of instructors is both fully certified to teach, and additionally has significant in-ring experience. Most of our instructors have held national championships; the head instructor has competed more than 250 times in over a dozen countries around the world. And the difference that level of experience makes in the instruction you receive is priceless.
Reviews (7)
Blake Menard
Blake Menard
Mar 16, 2021
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Great place to start training whether you're new to, or experienced in, martial arts. Mike is a great person and an even better teacher!
Luis Ciraiz
Luis Ciraiz
Dec 26, 2020
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Positive: Professionalism
World class instruction! I have traveled across the globe to train at Grizzly Gym and I'll keep going back.
Jacob Alexander
Jacob Alexander
Jun 12, 2020
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Positive: Communication, Professionalism, Quality, Value
Started both Muay Thai and Jiu Jitsu classes here! It’s a fantastic place to learn martial arts and get in better shape
Mark Toniolo
Mark Toniolo
Jan 09, 2018
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Great place to train both Brazilian Jiu Jitsu and Muay Thai, Mike is a very knowledgeable instructor
Campbell Douglas
Campbell Douglas
Oct 16, 2017
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Great atmosphere. Everyone is super welcoming to beginners. Every time I go I pick up something new.
Ryan Leonard C. P. T.
Ryan Leonard C. P. T.
Oct 13, 2017
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A fantastic team of highly trained and experienced instructors!! Some of the best Muay Thai training I've experienced!
Justin Ferguson
Justin Ferguson
Sep 19, 2017
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Want to train with absolute savages? this is the place! Professor Mike Martelle has build a great place to train martial arts. Amazing seminars and guest instructors. For beginners to advanced this is the place to go in Kingston!