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DiamondHeart Striking and Grappling/PCC
5 ★★★★★ 279 Google reviews · Muay thai gym in Brooklyn, New York
Authentic Thai — reviews and the gym's own info point to coaching rooted in Thailand's muay thai tradition. If lineage matters to you, ask where the coaches trained and about their kru.
Martial arts–focused gym offering Muay Thai, Brazilian jiu-jitsu & yoga, plus other options.
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
- Beginner-friendly all levels welcome, including total beginners — you don't need to be fit or have any experience to start
- Kids & youth classes kids and youth muay thai classes (ages 4–12) — built around discipline, focus, and confidence
- Private lessons private, one-on-one coaching available — a focused way to start or to work around a busy schedule; ask about availability and rates
- Sparring & clinch sparring and clinch sessions for members ready for controlled contact — always optional and coach-supervised
- Fight team a competition team for members who want to test themselves as amateur fighters
- Today see hours ·
- Website & schedule teamdiamondheart.com — book classes and see the live schedule
- Phone (646) 692-0900
Hours
| Monday | 7:30 AM–9:30 PM |
| Tuesday | 7:30 AM–9:30 PM |
| Wednesday | 7:30 AM–9:30 PM |
| Thursday | 7:30 AM–9:30 PM |
| Friday | 7:30 AM–8:30 PM |
| Saturday | 9:30 AM–2 PM |
| Sunday | 11 AM–1 PM |
The classes they run
“There is also an emphasis on respect as well as community which is always a great thing to find in a gym for experienced people or brand new beginners.”
“As a woman, I’ve always felt safe at DiamondHeart.”
“The one-on-one intro session for beginners made a big difference in helping me feel comfortable when I first started.”
“I see Gavin and crew at Coaching Clinic events in the US and watch his fighters online as they compete at Top NYC promotions such as Warriors Cup and Freedom Fighters.”
“What include respect, self-defense (what is not just fight but how to get out a hard situation without fight) and they have fun doing this!”
“Specifically, we want to recognize Paloma, the coach for the children's grappling class.”
Other martial arts here
“Started out with Muay Thai and it didn’t take long for me to try out BJJ, boxing, kettlebells and yoga since they have a ton of classes available for everything at all times.”
“Started out with Muay Thai and it didn’t take long for me to try out BJJ, boxing, kettlebells and yoga since they have a ton of classes available for everything at all times.”
What members say
“After just one session I knew that DiamondHeart was a fantastic gym with a great community - it’s a huge space, well organised, and has excellent coaches.”
“I’d trained Muay Thai at one other gym for a few years, so coming to a new space was a bit daunting but Gavin and the team were extremely friendly and welcoming.”
“I’d trained Muay Thai at one other gym for a few years, so coming to a new space was a bit daunting but Gavin and the team were extremely friendly and welcoming.”
“I see Gavin and crew at Coaching Clinic events in the US and watch his fighters online as they compete at Top NYC promotions such as Warriors Cup and Freedom Fighters.”
“As a fellow gym owner and Muay Thai coach I’m always dropping in and visiting gyms across the US to network, gain ideas and new perspectives on the sport and industry.”
From the reviews
As a fellow gym owner and Muay Thai coach I’m always dropping in and visiting gyms across the US to network, gain ideas and new perspectives on the sport and industry.
DiamondHeart and the culture the owner, Gavin, has cultivated is excellent. I practice Muay Thai, and the individual attention they give each practitioner on and off the mat is superb– special shout-out to coaches Jesse and Diego! But all of his coaches deserve a dab, they’re like the Wu-Tang Clan - pick your style.
I recently started going here, and as expected when diving headfirst into a higher volume, new training regimen experienced a tendon issue in my foot. Here is where this gym stands out! I mentioned this issue and the gym gave me a complimentary session with the strength guy, Mark Sayer.
Training at Diamond Heart Striking and Grappling has been one of the best decisions I’ve made in my 40s. The coaches here are incredible — knowledgeable, patient, and genuinely passionate about helping everyone improve.
New to muay thai? Start at DiamondHeart Striking and Grappling/PCC
DiamondHeart Striking and Grappling/PCC comes up as a beginner-friendly gym — noted on their own site. If you've never thrown a punch or a kick, that's exactly who a good beginners program is for. A few things worth knowing before your first week. First, you don't need to be fit to start — you get in shape by training, not before it, and coaches scale the conditioning to you. Second, you won't be thrown into sparring — reputable gyms build fundamentals (stance, footwork, and the basic strikes of the "art of eight limbs") for weeks before any contact, and sparring stays optional. Third, all levels really are welcome — ask about a dedicated beginners or fundamentals class time so your first session is alongside others who are also starting out. Most gyms are happy to let you watch or try a class first, so reach out before you commit.
Your first muay thai class at DiamondHeart Striking and Grappling/PCC
Nervous about walking into a muay thai 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 the basics on pads and bags — not fighting. Rest whenever you need to; no one will bat an eye. What to wear: shorts or athletic wear and a t-shirt; you'll train barefoot on the mats. What to bring: water and hand wraps if you have them — many gyms lend gloves for a first class, so it's worth asking when you call. As you keep training you'll add your own gloves, wraps, a mouthguard, and shin guards. Sparring is optional and comes later, 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.
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