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Fire Inside Fitness

5 ★★★★★ 22 Google reviews · Kickboxing gym in Shelton, Connecticut

Free trial Beginners welcome Kids & teens Private lessons

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
  • 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 fireinsidefitness.com — book classes and see the live schedule
  • Phone (203) 209-8993

Hours

Monday 5–8:30 AM, 4–7:30 PM
Tuesday 9 AM–12 PM, 4–8:30 PM
Wednesday 5–9 AM
Thursday 9 AM–12 PM, 4:30 PM–12 AM
Friday 12 AM–12 PM
Saturday 6 AM–12 PM
Sunday Closed

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 Fire Inside Fitness, confirmed in members' own reviews and the gym's own info — not guessed from the sign out front.

🧒 Kids Kickboxing 5 mentions

“During each session Jon incorporates specific stretch’s and movements to help my son develop his boxing skills beyond the basics.”

All gyms that run kids kickboxing →

🥊 Boxing 2 mentions

“During each session Jon incorporates specific stretch’s and movements to help my son develop his boxing skills beyond the basics.”

All gyms that run boxing →

👤 Private Lessons

“My son has become a highly competitive college wrestler who also inspires to do personal training one day.”

All gyms that run private lessons →

Other martial arts here

Kickboxing gyms are usually multi-discipline. Here's what else members mention training under the same roof at Fire Inside Fitness — mined from their reviews and the gym's own info.

🥊 Boxing 2 mentions

“During each session Jon incorporates specific stretch’s and movements to help my son develop his boxing skills beyond the basics.”

Other gyms that also teach boxing →

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 22 Google reviews — in their own words.

🧑‍🏫 expert, motivating coaching 3 mentions

“Jon is an incredible trainer and just as good a person, which should also be important when working with someone 1:1.”

⚖️ great for weight loss 2 mentions

“I've only been working out at the new location for one month and am already seeing results on the scale after adding one more day of workouts.”

🤝 friendly, family gym 6 mentions

“He’s incredibly supportive and always pushes you to be your best, while making sure that everyone has a great time.”

From the reviews

Jon is an incredible trainer and just as good a person, which should also be important when working with someone 1:1. Jon is enthusiastic about fitness but doesn't make training hard to understand or too complicated. He is supportive and humble in the way he explains his exercises and how they will change your body.

★★★★★ — Annie, Sep 2023

Fire Inside Fitness has made a dramatic difference in my life. I receive a program customized for me that evolves as my goals change. My goals focus around quality of life. I am stronger and have better balance.

★★★★★ — Dawn, Sep 2023

I’ve been training at Fire Inside Fitness for a few months now, and I have to say, Jon is an exceptional coach! His expertise and passion for the sport are evident in every class. Jon’s coaching skills are top-notch; he breaks down techniques in a way that’s easy to understand, no matter your skill level.

★★★★★ — Becky, Jul 2024

Jon has been a trainer of mine for years before he opened here. If you are looking for a place where the staff are exceptionally trained and skilled instructors, and will not only help you reach the next level but bring you past the limits you think you cant achieve, then this is the place for you.

★★★★★ — Eric, Sep 2023

Excerpts from public Google reviews. Read all 22 reviews →

New to kickboxing? Start at Fire Inside Fitness

Fire Inside Fitness 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 Fire Inside Fitness

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 Fire Inside Fitness

415 Howe Ave Ste 4110s, Shelton, CT06484

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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.