★ 5

Excellent gym, excellent instruction by an American Muay Thai legend. Highly recommend.

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★ 5

I really enjoy to come and practice kickboxing at this place. Classes last for 45 min, the coach is chill and supportive. The people who come are cool. Highly recommend you to join the gym.

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★ 5

the best team ever, justine is amazing teacher, ig you want to know real muay thai, this is the spot

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★ 5

You will not find a better or more experienced coach in Philly

I have been training with Stay Fly Muay Thai now for 2 years and I can say I hve not had a bad experience with Justin as my coach nor with the other students that attend. Justin is an extremely qualified coach with nearly 20 years of experience and 100 professional fights. I have witnessed him teach classes of 30 people and I have had private lessons as well. No matter how big or small a class, the level of quality does not change. Justin has taught me since day one and I will never go to another gym. Justin teaches you all the fundamentals from punching, kicking kneeing, and elbowing to fast pace combos. He always explains the process to achieve perfect form and takes time to talk about all the details.

Whether you are looking to get fit, train for a fight or start a new hobby, this is the place to go. Justin focuses on all his students and caters to their needs. He can be sensative or stern depending on what you want out of the class. He will always push you to the amount that you are comfortable with.

I have followed this coach to three gyms and would gladly follow him to a fourth. The current gym still needs some renovation but that does not take away from the passion Justin or his students have for Muay Thai.

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★ 5

This gym is a gem for anyone looking to train Muay Thai, whether you’re a complete beginner or an experienced martial artist. The head coach, Justin Greskiewicz, is incredibly knowledgeable, with years of experience as a professional Muay Thai fighter, and it shows in the quality of teaching.

This gym accommodates all skill levels and is always welcoming and supportive. The environment is encouraging, fostering a real sense of community among members and the gym itself is clean, well-organized, and runs efficiently, making it a pleasure to train here.

If you’re looking for authentic Muay Thai training in a welcoming atmosphere, Stay Fly Muay Thai is the place to be. Highly recommend!

Source: Google

★ 5

Stay Fly is the premier place to train Muay Thai/kickboxing in Philly. Nobody has more experience and knowledge of the sport nearby than Justin Greskiewicz. Whether you want to come for fitness and fun or you are an aspiring fighter, the environment and facilities at Stay Fly are top notch.

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★ 5

Great place to train. Justin is the best muay thai coach and helps all people of any skill level.

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★ 5

Great place to learn muay thai. Justin is a legend and a great coach

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★ 1

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★ 5

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★ 5

Stay Fly is amazing! The staff is excellent and super welcoming and the training is great. Would totally recomend!

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★ 5

Justin is a great teacher and great guy. Very welcoming environment. Stay Fly is the real deal.

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★ 5

I'm re-reviewing Stay Fly Muay Thai now that it's moved the new location at Logic. This is still a great place to train and the new location is awesome. You can do just the Muay Thai or add in some BJJ which is exceptional as well. It's a complete system of martial arts. You can be hobbyist like myself, or compete.

Coach Justin Greskiewicz is seasoned and experienced fighter, he's fought world champions so you get instruction from a championship fighter. You won't find a better place to train pure Muay Thai in the city, or the region for that matter.

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★ 5

Great classes and very patient teachers. I recommend this school to everyone from kids to adults.

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★ 5

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★ 1

I was a former student and instructor here. If you are looking for a good role model and instruction then LOOK SOMEWHERE ELSE! Stay Fly is a place where the owner favors females who look at him with a “god complex”. Be weary of getting close and falling for this mans trap. He is a bad man, and will make your life living hell if you let him. Stay away!!

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★ 1

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★ 5

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★ 5

I felt very welcomeand the price is decent

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★ 5

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★ 5

if you are looking to take your exercise routine above and beyond, this is the place! I highly recommend getting into shape before taking any classes, however everyone is very helpful and will push you past your limits. The sessions are very organized and fast paced with great instructors. The environment is clean and comfortable. The people are of all ages and different cultures which just adds even more to your learning potentials. For any person who loves combat sports training, ya gotta check it out.

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★ 5

Great for kids. Top training in Philly Area.

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★ 5

So much fun. I'll be back. Can't wait to learn more.

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★ 5

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★ 5

Had the pleasure of training here for a few days while in Philly for work. Very welcoming gym, clean and well equipped. All staff and other students were awesome and the classes are great. Highly recommend. All be back whenever I'm in Philly.

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★ 5

Really loved the intro class, Justin broke down all the fundamentals and even though I've been doing krav for years it was a good refresher. Can't wait to get started

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★ 5

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★ 5

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★ 5

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★ 5

I have been training at Stay Fly for about 6 months. Justin is an excellent teacher with a ton of experience. If you want to learn Muay Thai from a professional this is your place, great atmosphere and people. I highly recommend!

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★ 5

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★ 5

Legit gym, just moved to Philly and will be training here.

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★ 5

Went renzo Gracie Hatfield a state of the art training facility and nothing but stay fly in probably daneil Gracie even compare to what this gym has to offer strength and conditioning boxing and muay Thai makes a great fighter plus the best teacher in the whole Philadelphia PA region nikkie mcres matt zuback reigel Derick Justin iasiah are the best

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★ 5

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★ 5

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★ 5

Great place to train!

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★ 5

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★ 5

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★ 5

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★ 5

Great place and excellent instructors. Everyone here is encouraging and always positive.

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★ 5

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★ 1

I sent my ammy MT fighter to this gym to train while up in Philly. On the website it clearly states “$25 for daily pass”. I had my fighter contact the owner to confirm it was $25/day and he replied “you can take as many classes as you want but you can’t spar”. My fighter goes the first day and gets injured in the beginner class because his partner had no idea how to properly hold pads, chalked it up to inexperience, it happens. He returns the second day for the 12 noon class, pays his $25 daily fee and is now told he must pay an ADDITIONAL $25 if he intends to return to night classes as “we used to do day passes but it’s too hard keeping track of people” per the owner. It is very disappointing when you come across gyms that take advantage of young fighters. I certainly will never recommend this gym to anyone and have informed my fellow gym owners in the area of exactly what happened- text messages and all. I have sent fighters to train with Phil Nurse, Hard Knocks, ATT, CSA, Gracie schools, Fusion XL etc.. and not only has this NEVER ever happened with any other school but their daily fees are far less for high caliber training. BE AWARE that reputable gyms would never blatantly take advantage of someone like this.

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★ 5

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★ 5

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★ 5

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★ 5

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★ 5

so much fun :) no experience needed and for all ages since there are classes for kids on the weekends

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★ 5

Really satisfied with the show they're running at Stay Fly. Knowledgeable staff with belts to their claims, very open community and equipment is clean and in good shape, which is a common issue Ive seen at other gyms around Philly. If you're looking for a "pure" muay thai gym with an awesome community behind it, this is your spot.

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★ 5

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★ 5

Fun class great workout!

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★ 5

I just signed my son up & we both love this place...Everyone is so friendly, and they work well with kids. & there’s free parking :) Everything is great!

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★ 5

Great gym, Justin Greskiewicz is super attentive to students and breaks down every strike with detail.

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★ 5

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★ 5

Instructors are patient and excited to teach the technical stuff and the members are welcoming.

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★ 5

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★ 5

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★ 5

I just did my 2nd class I can tell I’ll love it already.

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★ 5

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★ 5

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★ 5

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★ 5

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★ 4

I enjoy the facility and the owner/instructor Justin among the others. He teaches traditional Muay Thai and has been to Thailand and has competed. He is constantly improving the facility. It was quite intimidating the first time I went but he got me through it. If you are looking to just do it as exercise or go up to competing, this is the place to go to.

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★ 5

the best place to train. everyone is super nice and you get a ton of 1 on 1 attention

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★ 5

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★ 5

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★ 5

Love the gym, the classes, the instructors!

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★ 5

Awesome coaches and awesome people. Makes for a great place to train and work out!

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★ 5

My Son Love it and very happy anytime when he be there.

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★ 5

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★ 5

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★ 5

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★ 5

Great community. Awesome instructors.

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★ 5

The value and flexibility of training here is excellent. You'd be hard pressed to find better instruction on Muay Thai or weight training, especially under one roof. People are friendly, accepting, and come to work towards their personal goals. Haven't encountered the big egos/insecurities that sometimes come with combat sports.
Justin has worked hard on Muay Thai for quite a while, built an excellent small business from the ground up, and is 100% engaged as an instructor. Stay Fly does Philly proud.

Source: Google

★ 5

I’ve been training here almost 2 years now, it’s one of the better if not the best Muay Thai establishments in the area. From coaches to the clientele, I’ve managed to learn a bunch and made some great friends along the way. No matter if your goals are to compete or get into better physical shape, there are classes here to fit your needs. They even offer auxiliary classes such as strength and conditioning, Olympic lifting and kettlebell training. The schedule is setup to benefit those early birds for AM classes as well as the evening post work day classes. All in all, I’d highly recommend this gym, Thursday nights at 7pm are introduction classes, come by and see for yourself.

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★ 5

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★ 5

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★ 5

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★ 5

THE BEST GYM I EVER BEEN TOO IN MY LIFE! 👏👏👏👏👏💪💪💪💪🔥 🔥

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★ 5

Stay Fly Muay Thai is a hallmark of Philadelphia's Muay Thai scene. Run by one of the most experienced fighters in America, Justin Greskiewicz. He's fought some contemporary legends including Malaipet Sasiprapa, Kevin Ross, Matt Embree, and Liam Harrison. He's fought on Lion Fight, Glory Kickboxing and in Thailand.

They have a good intro package of intro classes and monthly prices at a reasonable $125 a month.

The gym offers strength and conditioning, boxing and Muay Thai. They have a kid's program which is always great.

The gym has an old school feel to it. Don't expect too many frills but do expect good honest training.

Stay Fly has a few fighters and Justin really has them focus on their technique.

Overall the gym is a solid reputable place to train in Philadelphia. Check it out if you're in the area.

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★ 5

Best Muay Thai gym in Philadelphia

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★ 5

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★ 5

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★ 5

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★ 5

Justin, the owner & proprietor of Stay Fly, and a professional Muay Thai fighter, is probably the nicest guy I know. His gym reflects this, and is the opposite of the stereotypical attitude-filled combat sports gym. Justin, the other instructors, and the students are all friendly and accepting, whether you're brand new (you'll get a personalized intro on day 1) or are already fighting regularly. With classes that focus on beginners, advanced techniques, strength & conditioning, fitness, Olympic lifting, and fight training, there's something for everybody. If you're still reading, you owe it to yourself to check this place out!

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★ 5

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★ 5

Shawn continues to keep it interesting during his strength and condition boot camp. Amazing workout as usual!!!!

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★ 5

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★ 5

This is an amazing place to go. Knowledgeable and relatable instructors. I always feel great afterwards and in all aspects of life. I highly recommend this for everyone.

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★ 5

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★ 5

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★ 5

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★ 5

Addicted to these classes!! Wish I could go more often.

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★ 5

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★ 5

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★ 5

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★ 5

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★ 5

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★ 5

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★ 5

This place is awesome! It is so welcoming to newcomers and while it can be a bit intimidating sometimes, everyone is super helpful and supportive. You get a serious workout but not at the expense of learning and drilling proper technique. I would recommend this place to beginners and veterans alike. It has something for everyone!

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★ 5

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★ 5

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★ 5

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★ 5

Love stayfly. Justin and the others are all great teachers for beginners and advanced. Very inclusive everyone there is really nice. Definitely one of the best places to go in Philly Whether you just want to do it for fun or turn pro.

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★ 5

Top notch. The best Muay Thai school in Philly with a cast of knowledgeable and lovable characters as the coaching staff.

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★ 5

Stay Fly is a fantastic place to not only become a serious fighter but also great for getting in shape and to learn a thing or two about self defense. They offer several Muay Thai classes for all differnt levels of experience and also offer instructional weight lifting and strength and conditioning classes.
If you're interested in learning to fight or if you want to just get in better shape, give it a try and I can gaurentee you will be coming back.

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★ 5

Love going to Stay Fly Muay Thai! I learn something new each time and the coaches are fantastic.

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★ 5

My time at Stay Fly has been great. The instructors all do their best to train everyone equally and efficiently. I plan to stay there for a long time to come.

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★ 5

Amazing people and staff. No pushy gym bros and focus on making you enjoy your time at the gym and learning proper technique. Very excited to one day be part of the family.

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★ 5

The Muay Thai training alone is solid - coaches are knowledgeable, and those who train there are extremely helpful to each other, especially to newbies. This, in addition to the strength & conditioning classes, has me in the best shape of my life. There are enough classes throughout the day to fit even the busiest of schedules. No frills, no egos, no muss, no fuss. Stay Fly ... just get here.

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★ 5

Came in wanting to learn how to kick better; learned how to kick better.

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★ 5

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★ 5

Great Workout, Great Instructors, Overall Great Experience!

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★ 5

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★ 5

This place is amazing. The gym has plenty of space, the instructors are all incredible, it's members are super welcoming, and it has it's own parking! I'm all about putting quality over convenience, but this place has both.

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★ 5

Outstanding gym- both the instructors and the students are great

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★ 5

Great gym, great crew, great culture.

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★ 5

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★ 5

I love this place! Before coming to Stay Fly I had absolutely zero experience with Muay Thai. I normally go to a traditional gym to lift weights and do cardio, but after relocating to Philadelphia, I was looking to step outside of my comfort zone a bit. I'm glad I did! Stay Fly has a real family feel to it. The instructors and the other students are approachable and always happy to help you with your technique. The classes are really fun, and the time flies by when you're training. Overall, it's been a great experience. Not only have I been able to get a good workout in, but I've also been given the chance to meet people and be a part of a community.

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★ 4

Great workout for an out of town visitor.

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★ 5

The guys and gals at Stay Fly are fantastic. The classes are intense but not intimidating at the same time. The instructors try to keep things laid back yet there is always an emphasis on technique. There are members who compete regularly and also members that just want a great workout. Additionally, there are also free weights (squat racks, dumbbells etc) and heavy bags too, in case you want to do some solitary work. Bottom line is if you're in Philly and want to train Muay Thai, I highly recommend Stay Fly.

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★ 2

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★ 5

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★ 5

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★ 5

I just started training Muay Thai in October and be careful, its addicting. I looked around at a couple of gyms first and I mentioned to a friend of mine that I was looking at Stay Fly and he told me to jump on it. "Justin has great energy" he said. A little weird but he was right, and the gym follows suit. You would think a place filled bunch of dudes and chicks punching each other in the face would be a little rough but its totally the opposite. All of the students I've met are the nicest people you would ever want to train with. Its a little unnerving going in and knowing absolutely nothing about Muay Thai, but everyone there is helpful and supportive. Everyone had their first day and they try their best to not make you feel like a complete goofball, although goofing around isn't off limits either. Also, I wanted to try and get in shape so I could concentrate on technique while I was there but that same friend said theres no point. "Nothing will get you in shape to fight, except fighting." So true! so call up and do It! Talk Less, Do more. Fighters Fight!

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★ 5

Stay Fly is the place to go if you want knowledgeable Muay Thai instruction. This isn't one of those karate schools that suddenly started offering Muay Thai after MMA took off, Stay Fly's focus is solely on the art of 8 limbs

Head coach Justin Greskiewicz is a one man library of Muay Thai knowledge. This doesn't mean he's a know-it-all but rather a very approachable expert who is always willing to break down a technique that you can't quite get a handle on. Piggybacking off Justin's cool vibes, Stay Fly is a very welcoming environment where both novices and veterans can train together. So if you are new to the sport or have taken some time off and are a bit rusty, this is the place to be.

Another important aspect of Stay Fly that can not be stressed enough is that it is a Muay Thai gym, not a MMA gym or Jiu Jitsu gym with a Muay Thai class mixed in. From personal experience I can attest to how annoying it is to have your discipline play second fiddle to whatever the owner's martial art is. No longer will you show up to class only to find it was canceled so the Jiu Jitsu class could do their belt promotions. Stay Fly has classes 7 days a week so you can fit classes into even the most hectic schedules.

With great rates (that get even better if you bring a buddy to join you in some Muay Thai merriment) and a warm, welcoming atmosphere that goes along with the top notch instruction, I couldn't it recommend more.

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★ 5

Stay Fly is the most awesome place in the world! That about sums it up. I've been training with Justin for a few years now. The skills he posses is one thing, but being able to translate that to students of varying backgrounds is a completely different story. He trains elite fighters looking to become MMA or Muay Thai specialists. He can teach students who have never threw a punch before. Don't want to be a fighter but want to get into the best shape of your life, Stay Fly is the place to do it. The training that Justin provides are life skills not just fighting skills. We even started our 7 year old there to train just for the life experience of training with a legend in the sport. Local and home grown PA product. Stay Fly is where all the cool kids are at!

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★ 5

I have trained with Justin Greskiewicz in Muay Thai for over a year and I recommend it to anyone. Stay Fly Muay Thai is a great atmosphere to train in for beginners and experienced fighters and everyone in between. No matter your skill level you will be given personalized instruction and positive encouragement. When I first decided to train in Muay Thai I was looking to lose a few pounds and get in shape. I got all of that and more. Not only did my fitness improve but my self confidence went up and I owe all of that to my Muay Thai training. Stay Fly Muay Thai is the best Muay Thai gym in around Philly bar none.

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★ 5

being a long time Justin's student, I am really excited that he opened his own place - Stay Fly Muay Thai. The gym is great, new, spacious and well equipped - with 2 full-size boxing rings, lots of heavy bags, CrossFit-style athletic rig and plenty of mat/floor space. As always - great energy, friendly and intense environment. I'm seriously thinking about getting back to training here full-time and competing again, stay tuned! And - Stay Fly!

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★ 5

This place is really getting to be something special. The students are all diligent hard workers with great attitudes and the fighters are all humble and helpful. Whether your goal is to get in shape, learn self defense, or compete, I'm confident you'll find that Stay Fly Muay Thai is the right place for you. The vibe is super welcoming and exciting. I am proud to call this place home.

Source: Google