HomeMichiganGrand Blanc › Cosens Martial Arts Grand Blanc LLC

Cosens Martial Arts Grand Blanc LLC

4.7 ★★★★★ 84 Google reviews · BJJ gym in Grand Blanc, Michigan

BJJ gym Kids & teens Competition team

Plan your first class

  • Kids & youth classes kids and youth BJJ classes (ages 3–12) — built around discipline, focus, and confidence
  • Competition team a competition team for members who want to test themselves at tournaments
  • Today see hours ·
  • Website & schedule cosensmmagrandblanc.com — book classes and see the live schedule
  • Phone (810) 771-4377

Hours

Monday 3–9 PM
Tuesday 3–9 PM
Wednesday 3–9 PM
Thursday 3–9 PM
Friday Closed
Saturday Closed
Sunday Closed

Hours shift for holidays, seminars, and open-gym times — worth a quick check before a special trip.

The classes they run

BJJ classes on the schedule at Cosens Martial Arts Grand Blanc LLC, confirmed in members' own reviews and the gym's own info — not guessed from the sign out front.

🧒 Kids BJJ 26 mentions

“In the short time my son has attended, I already see a huge difference in his self-confidence, his want to be more responsible and his ability to focus.”

All gyms that run kids bjj →

🛡️ Self-Defense 5 mentions

“All the while, learning self defense and valuable life lessons.”

All gyms that run self-defense →

Other martial arts here

BJJ gyms are usually multi-discipline. Here's what else members mention training under the same roof at Cosens Martial Arts Grand Blanc LLC — mined from their reviews and the gym's own info.

🏟️ MMA 6 mentions

“I started back in the early summer, looking for some accountability when it came to staying fit, and decided to give myself a challenge: MMA.”

Other gyms that also teach mma →

🥊 Boxing

“Especially for the adult program, this is a mixed martial arts (MMA) school, not a strict jiu jitsu or boxing gym.”

Other gyms that also teach boxing →

🎽 Karate 2 mentions

“Our 4 year old loves coming to class and gets excited about her karate days.”

Other gyms that also teach karate →

Disciplines are mined from reviews and the gym's own info — they show what members have trained, not a formal class guarantee. If you specifically want MMA, muay thai, or wrestling alongside your BJJ, confirm the current schedule with the gym.

What members say

The things reviewers bring up again and again across 84 Google reviews — in their own words.

🧑‍🏫 expert, high-level coaching 5 mentions

“Little Ninjas Class (3-5 year olds) 30 minutes, 2 days/week Coach Osbourne does a great job leading the class.”

🌱 welcoming to beginners 3 mentions

“All three coaches are welcoming, knowledgeable, and supportive and the classes themselves are a great outlet for extra energy.”

🤝 no-ego, friendly academy 12 mentions

“All three coaches are welcoming, knowledgeable, and supportive and the classes themselves are a great outlet for extra energy.”

📘 strong technique & fundamentals 5 mentions

“They did not disappoint - from the first trial lesson, I was on the mat, learning grappling and sparring techniques with the coaches.”

great workout & conditioning 3 mentions

“Both will push you to your physical limits (safely, of course) and provide a serious workout (I rarely leave without having soaked at least one t-shirt with sweat).”

🧒 strong kids program 5 mentions

“Coach Zack has been so awesome with our son and has given him such confidence.”

From the reviews

"This place is amazing and has been a huge help for my brother in terms of discipline and social skills. He used to be very shy and struggled to connect with other kids, but here he's found a welcoming and stimulating environment that has allowed him to grow and develop in a holistic way.

★★★★★ — Estefany, May 2025

My son has loved his experience at Cosens MMA. Coach Mulaney sets reasonable expectations and holds the kids to the consequences. My son is learning how to hold still and listen to instructions, he loves saying positive affirmations and really likes the homework assignments!

★★★★★ — Keri, Apr 2022

My son started at Cosens in April of 2022. He has grown so much, physically, mentally and emotionally. He has learned self discipline and amazing character development. All of the coaches are so patient with him and always want to see him grow as a martial artist and as an individual.

★★★★★ — Amanda, Jul 2022

We've been at Cosen's for over a year now and the self discipline in my 5yr old is astronomical. The best coaching staff that interacts and knows each student on a personal level.

★★★★★ — Kristine, May 2024

Excerpts from public Google reviews. Read all 84 reviews →

Your first BJJ class at Cosens Martial Arts Grand Blanc LLC

Nervous about walking into a BJJ gym for the first time? Almost everyone is, and good coaches expect beginners to come through the door. Here's what to know. What to expect: a typical first class is a warm-up, then drilling basic positions and escapes with a partner — not hard sparring. Rest whenever you need to; no one will bat an eye. What to wear: athletic wear you can move in (or a gi if you have one); you'll train barefoot on the mats. What to bring: water and a mouthguard if you have one — many gyms lend a loaner gi for a first class, so it's worth asking when you call. As you keep training you'll add your own gi (or a rashguard and shorts for no-gi) and a mouthguard. Live rolling eases in gradually, once your fundamentals are solid. Arrive 10–15 minutes early to sign a waiver and meet the coach. It gets easier fast — most people feel far more at home by their third class.

BJJ is a contact sport. Ease in, tap early and often, listen to your coaches, and if you have any injuries or health concerns, mention them before class and check with a doctor if you're unsure.

Where to find Cosens Martial Arts Grand Blanc LLC

12830 S Saginaw St Ste b, Grand Blanc, MI48439

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Listing verified July 2026 from public business records and member reviews. Something out of date? Report a correction. Own this gym? Claim your listing — it's free.