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O2 Fitness and Nutrition, LLC

5 ★★★★★ 65 Google reviews · Kickboxing gym in Alsip, Illinois

Kickboxing gym Free trial Beginners welcome Kids & teens Cardio kickboxing Private lessons

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 fitness levels welcome, including total beginners — no experience needed, and you get in shape by training, not before
  • Cardio kickboxing classes high-energy cardio kickboxing on the bags and pads — a fun, sweaty workout built for fitness and weight loss, at your own pace
  • Kids & teen classes kids and teen kickboxing classes — built around confidence, focus, and fun
  • Private lessons one-on-one coaching available — a focused way to start or to work around a busy schedule; ask about availability and rates
  • 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 and class-schedule changes — worth a quick check before a special trip.

The classes they run

Kickboxing 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.

🧒 Kids Kickboxing 4 mentions

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

All gyms that run kids kickboxing →

🌱 Beginners 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 beginners →

👤 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 →

Kickboxing Bootcamp 2 mentions

“Liz is beyond a sweetheart and so funny-but her HIIT classes are seriously no joke and she can roll very well in the Brazilian Jujitsu classes!”

All gyms that run kickboxing bootcamp →

🔥 Cardio Kickboxing

“Liz is beyond a sweetheart and so funny-but her HIIT classes are seriously no joke and she can roll very well in the Brazilian Jujitsu classes!”

All gyms that run cardio kickboxing →

Other martial arts here

Kickboxing 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.

🥋 Brazilian Jiu-Jitsu 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 →

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 muay thai, boxing, or MMA alongside your kickboxing, 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 7 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.”

⚖️ great for weight loss 5 mentions

“I would highly recommend O2 if you are in the Chicagoland area and looking to get more serious with strength training, weight loss, etc”

🧼 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 & relieves stress 2 mentions

“O2 has changed my life - I've been on my journey with Matt and Paola for almost 2 years; down 100+ lbs while not losing any muscle.”

🤝 friendly, family gym 19 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.”

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 kickboxing? 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 class is for. A few things worth knowing before your first week. First, you don't need to be fit or coordinated to start — you get in shape by training, not before it, and coaches scale every drill to you. Second, you won't be thrown into hard sparring — reputable gyms build the basics (stance, footwork, and punches and kicks on pads and bags) first, and any contact eases in gradually under a coach's control. Third, all fitness 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 kickboxing class at O2 Fitness and Nutrition, LLC

Nervous about walking into a kickboxing 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 — stance, footwork, and punches and kicks on pads or a heavy bag — not hard sparring. Go at your own pace and rest whenever you need to; no one will bat an eye. What to wear: comfortable athletic clothes you can move and sweat in, and supportive trainers. What to bring: water, and hand wraps and gloves if you have them — many gyms lend loaner gloves for a first class, so it's worth asking when you call. As you keep training you'll add your own gloves and wraps (and shin guards once you start sparring). Sparring is optional and eases in gradually, once your basics 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.

Kickboxing is a contact sport. Warm up, pace yourself, 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

Get directions Instagram · Facebook

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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.