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Concord Self-Defense Academy

5 ★★★★★ 2 Google reviews · BJJ gym in Concord, Massachusetts

BJJ gym

Plan your first class

Hours

Monday Closed
Tuesday Closed
Wednesday Closed
Thursday 7:45–9:15 PM
Friday Closed
Saturday Closed
Sunday 3:30–5 PM

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 Concord Self-Defense Academy, confirmed in members' own reviews and the gym's own info — not guessed from the sign out front.

🛡️ Self-Defense

“These authentic martial arts masters focus on teaching the practical self-defense techniques of real jujitsu and karate while developing the self-confidence of their students.”

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 Concord Self-Defense Academy — mined from their reviews and the gym's own info.

🎽 Karate 3 mentions

“They bring more than 70 years of combined martial arts experience to their students and are both highly accomplished fifth degree black belts in both karate and jujitsu.”

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 2 Google reviews — in their own words.

🧠 builds confidence & discipline 3 mentions

“Their collective experience connecting with students of all ages in a respectful, fun and disciplined manner is extensive and impressive.”

From the reviews

Sensei Johanna Glazer and Sensei Len Glazer are two of the most experienced and highly respected teachers within the International Seirenkai Organization. They bring more than 70 years of combined martial arts experience to their students and are both highly accomplished fifth degree black belts in both karate and…

★★★★★ — Daniel, Dec 2025

Great teachers, excellent facility and fun and safe atmosphere l. Extremely recommended!

★★★★★ — Eyal, Dec 2024

Excerpts from public Google reviews. Read all 2 reviews →

Your first BJJ class at Concord Self-Defense Academy

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 Concord Self-Defense Academy

310 Baker Avenue Extension, Concord, MA01742

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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.