HomeColoradoCentennial › Busy Brazilian Jiu-Jitsu & Fitness (Busy BJJ)

Busy Brazilian Jiu-Jitsu & Fitness (Busy BJJ)

4.9 ★★★★★ 36 Google reviews · BJJ gym in Centennial, Colorado

BJJ gym Free trial Affiliated Kids & teens Competition team

Affiliated academy — reviews and the gym's own info point to a recognized BJJ lineage or affiliation (think Gracie Barra, 10th Planet, Renzo Gracie, Alliance, Atos or Checkmat). If lineage matters to you, ask which affiliation the academy belongs to and under whom the head instructor earned their black belt.

Gym & training venue offering instruction in Brazilian jiu-jitsu, self defense & general fitness.

Plan your first class

  • Free trial or intro class most gyms welcome new members with a free trial or intro class — check their site or give them a call to book your first session
  • Kids & youth classes kids and youth BJJ classes — 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 busybjj.com — book classes and see the live schedule
  • Phone +1 720-239-2879

Hours

Monday 11:30 am–1:30 pm, 4:15–8:30 pm
Tuesday 6:30–7:30 am, 4:15–7:30 pm
Wednesday 11:30 am–1:30 pm, 4:15–8:30 pm
Thursday 6:30–7:30 am, 4:15–7:30 pm
Friday 6:30–7:30 am, 12:30–1:30 pm, 4:15–7 pm
Saturday 10–11:30 am
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 Busy Brazilian Jiu-Jitsu & Fitness (Busy BJJ), confirmed in members' own reviews and the gym's own info — not guessed from the sign out front.

🧒 Kids BJJ 16 mentions

“The coaches are outstanding — they’re patient, knowledgeable, and know exactly how to connect with kids.”

All gyms that run kids bjj →

🏆 Competition Team

“(I don’t compete, but there are people here that do.”

All gyms that run competition team →

🛡️ Self-Defense

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 Busy Brazilian Jiu-Jitsu & Fitness (Busy BJJ) — mined from their reviews and the gym's own info.

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 36 Google reviews — in their own words.

🧑‍🏫 expert, high-level coaching 4 mentions

“Everyone is very friendly and welcoming and Professor Mario's curriculum is great to help step your game up, no matter your experience level.”

🌱 welcoming to beginners 6 mentions

“Everyone is very friendly and welcoming and Professor Mario's curriculum is great to help step your game up, no matter your experience level.”

🤝 no-ego, friendly academy 19 mentions

“Everyone is very friendly and welcoming and Professor Mario's curriculum is great to help step your game up, no matter your experience level.”

📘 strong technique & fundamentals 6 mentions

“I always thought my strength would get me by in a fight but Professors taught me that technique will win over strength the majority of the time.”

🧒 strong kids program 2 mentions

“If you’re looking for a supportive and professional environment where your kids can thrive, I can’t recommend Professor Mario and his team at Busy Bee enough!”

active competition team 2 mentions

“This is a family friendly community-based academy that would be great for anyone, whether you just want to get in shape or want to develop serious competition-level jiu jitsu.”

From the reviews

Great place to train. My daughter and I were in town for a visit and stopped in to train. The atmosphere was great. Professor Mario Correa attention to detail was great and he went out of his way to make us feel like family. It was a great experience. Thanks to all.

★★★★★ — Bruce, Jul 2017

Fantastic instruction, atmosphere and culture. My kid is developing immensely during his time here. The instruction is excellent whether you are new or advanced. Professor Mario “Busy” and the coaches are so welcoming and awesome!!

★★★★★ — Malcolm, Aug 2021

I’ve been training at Busy BJJ for a few months now, and everyone there has treated me like family since day one. I had no athletic, sports or martial arts experience when I started.

★★★★★ — Joey, Jul 2021

My son started training with Professor Mario "Busy" Correa and his awesome coaches a few months ago. He loves to train at Busy BJJ. Professor Busy, besides being a natural at teaching kids and adults, has developed a very structured class.

★★★★★ — Alirio, Oct 2016

Excerpts from public Google reviews. Read all 36 reviews →

Your first BJJ class at Busy Brazilian Jiu-Jitsu & Fitness (Busy BJJ)

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 Busy Brazilian Jiu-Jitsu & Fitness (Busy BJJ)

8200 S Quebec St A-10, Centennial, CO80112

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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.