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O2 Fitness and Nutrition, LLC

5 ★★★★★ 65 Google reviews · Muay thai gym in Alsip, Illinois

Muay Thai gym Free trial Beginners welcome Kids & teens Private lessons Fitness classes

Fitness facility offering personal training, martial arts, group classes, and nutritional counseling.

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 — 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
  • Fitness & conditioning muay thai fitness and cardio classes — a serious workout you can do without ever having to spar
  • Today see hours ·
  • Website & schedule o2fitnessnutrition.com — book classes and see the live schedule
  • Phone +1 708-969-6110

Hours

Monday 5 am–8 pm
Tuesday 5 am–8 pm
Wednesday 5 am–8 pm
Thursday 5 am–8 pm
Friday 5 am–8 pm
Saturday 7:30 am–1 pm
Sunday 7:30–11 am

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

The classes they run

Muay thai classes on the schedule at O2 Fitness and Nutrition, LLC, confirmed in members' own reviews and the gym's own info — not guessed from the sign out front.

🌱 Beginner Muay Thai 3 mentions

“Classes are fun and easy to join in even if you are a beginner, whether it be yoga, jiu-jitsu, kickboxing, boot camp, or strength training.”

All gyms that run beginner muay thai →

🧒 Kids Muay Thai 4 mentions

“So clean, hands on staff and love that there is something for everyone, even kids!”

All gyms that run kids muay thai →

👤 Private Lessons 4 mentions

“I can say for each personal training session and for each class I have attended; no two classes have been the same and continue to keep me on my toes!”

All gyms that run private lessons →

Other martial arts here

Muay thai gyms are usually multi-discipline. Here's what else members mention training under the same roof at O2 Fitness and Nutrition, LLC — mined from their reviews and the gym's own info.

🦵 Kickboxing

“Classes are fun and easy to join in even if you are a beginner, whether it be yoga, jiu-jitsu, kickboxing, boot camp, or strength training.”

Other gyms that also teach kickboxing →

🥋 Brazilian Jiu-Jitsu (BJJ) 2 mentions

“Classes are fun and easy to join in even if you are a beginner, whether it be yoga, jiu-jitsu, kickboxing, boot camp, or strength training.”

Other gyms that also teach brazilian jiu-jitsu (bjj) →

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 BJJ, boxing, or MMA alongside muay thai, confirm the current schedule with the gym.

What members say

The things reviewers bring up again and again across 65 Google reviews — in their own words.

🌱 welcoming to beginners 6 mentions

“Classes are fun and easy to join in even if you are a beginner, whether it be yoga, jiu-jitsu, kickboxing, boot camp, or strength training.”

🤝 no-ego, friendly gym 20 mentions

“The intimate setting means you never deal with overcrowding, and both Paola and Matt genuinely care about your progress, making you feel like part of the family.”

📘 real technique & fundamentals 3 mentions

“She is very informative as well as helpful with food substitutes, meal prep ideas, figuring out your downfalls & how to overcome them.”

🧼 clean, well-equipped gym 6 mentions

“Their programming is unique and effective, their staff is knowledgeable, helpful, and caring and they just got all new equipment (not that that matters too much!”

🧠 builds confidence & discipline 4 mentions

“He has helped me loose 100 lbs and change my life and focus, his wife and partner Paola is right there with him and he brings together a great community.”

From the reviews

I have been a client of Matt’s since 2015 and continued training with him at O2. It is a perfect gym to say the least. The personal training and group fitness classes are top notch!

★★★★★ — Chrysa, Oct 2021

Before moving to SC, O2 Fitness and Nutrition was my home away from home. The owners, Matt and Paola became like family and so did everyone in the group fitness classes. Their exercise program really pushed me outside of my comfort zone, in the BEST way! I never saw results like I wanted until coming to O2.

★★★★★ — Ashley, Oct 2021

O2 is truly the best!! The positive energy and welcoming vibe in the gym make me excited to go to all of the classes/workouts. Matt, Paola, and all the trainers here are extremely knowledgeable and genuinely care about you, your progress and your well-being.

★★★★★ — Caily, Jan 2025

I have been working with a personal trainer at O2 Fitness for about 9 months and I absolutely love this facility. I love the owners, the trainers and the atmosphere. This is a gym that will push you to your limits and in such a friendly almost family type environment.

★★★★★ — C, Jul 2021

Excerpts from public Google reviews. Read all 65 reviews →

New to muay thai? Start at O2 Fitness and Nutrition, LLC

O2 Fitness and Nutrition, LLC 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.

See their beginner class info

Your first muay thai class at O2 Fitness and Nutrition, LLC

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.

Muay thai is a contact sport. Ease in, 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 O2 Fitness and Nutrition, LLC

12609 S Kroll Dr #3309, Alsip, IL60803

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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.