#1 Fitness Hub in South Kolkata
Start Strong. Train 3 Days Free at Kamalgazi’s Most Premium Gym.
Train across 6,000+ sq ft of premium equipment with expert coaches on the floor — free for 3 full days. No card. No commitment. No sales pitch.
- Google rating
- 4.9/5
- Years in Kamalgazi
- 5+
- Sq ft training floor
- 6,000+
- 4.9★ Rated by members on Google
- 5 Years Serving Kamalgazi & Narendrapur
- 6,000+ Sq Ft Premium training floor
- Open 7 Days 6 AM–11 PM, every day
Why Flex N Flexi
More Than a Gym — a Training Environment Built Around Your Goal
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For Every Level, Every Age
Never trained before? Coming back after years away? You’ll fit right in. From 17 to 55+, beginners to competitive athletes, our coaches meet you exactly where you are.
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Everything Under One Premium Roof
Strength, cardio, yoga, MMA & Karate, fat loss, injury rehab, and nutrition — all in one place. Your goals can change without you ever changing gyms.
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Expert Coaches on the Floor
You’re never training alone. Certified trainers are on the floor during sessions to correct form, adjust your plan, and keep you progressing safely.
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Space to Actually Train
6,000+ sq ft, well-planned zones, and no fighting for a machine. Clean, spacious, and well-lit — the kind of place you actually want to show up to.
Programmes for Every Goal
Find the Programme Built for What You Want to Achieve
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Most Popular
Fat To Fit — Fat Loss Programme
Structured cardio, functional training, and real nutrition guidance built for sustainable results — not crash diets.
Learn more about the Fat To Fit programme -
Bodybuilding & Muscle Building
Progressive, form-first strength programming on premium equipment, guided by coaches who compete themselves.
Learn more about bodybuilding and muscle building -
Strength Training
Compound lifts, proper technique, and a plan that progresses with you — whatever your starting point.
Learn more about strength training -
Yoga & Mobility
Hatha and Vinyasa sessions in a calm, dedicated space — as a standalone practice or alongside your training.
Learn more about yoga and mobility -
Karate Training
Structured striking and grappling under experienced coaches — batches for children and adults.
Learn more about MMA and Karate -
Injury Rehabilitation
Carefully supervised recovery training that rebuilds strength, restores mobility, and prevents re-injury.
Learn more about injury rehabilitation
Inside Flex N Flexi
Step Into a Space Designed for Serious, Comfortable Training
You walk onto 6,000+ sq ft of clean, well-lit training floor. A full strength and free-weight zone on one side. A dedicated cardio section that isn’t packed three-deep. A functional training area with room to move. A separate, calm space for yoga and stretching.
Equipment that’s maintained and upgraded — no “out of order” signs, no waiting in line.
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Strength & free-weight zone -
Dedicated cardio floor -
Functional training area -
Yoga & stretching space -
Room to train — never crowded
Meet Your Coaches
Trained by Specialists Who Live What They Teach
A gym is only as good as the people on its floor. Our team brings rare depth across disciplines — so whatever your goal, someone who has mastered it is coaching you.
See It For Yourself
We’d Rather Show You Than Tell You
Real sessions, real coaches, real members — filmed on our floor. Press play and see exactly what your three free days look like.
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A walk through the whole floor
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What our 'Fat To Fit' Champion Says
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Meet A Beignner At Flex N Flexi
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Strength training, done under guidance
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A Special 10 On 10
What Our Members Say
The Neighbourhood’s Verdict Is In
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One of the best gyms I've been to! Great ambience, excellent facilities, and a well-designed space. The trainers are friendly, cooperative, and very supportive. Suitable for people of all age groups. Overall, a fantastic fitness experience. Highly recommended!💌
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I have been working out here for a long time now. This is hands down the best facility in and around Garia. It's spacious, well equipped with all modern equipments. Most importantly the trainers are friendly, very dedicated and knowledgeable. I've known Joy since I first joined and he has played a key role in my fitness journey. I would highly recommend this place to anyone considering joining.
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My daughter attends her karate classes here and she enjoys the same. The gym is clean, well equipped and the instructors are excellent with children. It's a great place to build fitness, discipline and confidence. Highly recommended!
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Awesome gym. The environment is amazing and family friendly. State of the art equipment’s and very knowledgeable and friendly trainers make working out feel like a detoxifying experience. Highly recommended.
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Flex n Flexi truly sets the standard for fitness excellence. The ambience is incredibly motivating — clean, spacious, well-lit, and thoughtfully designed to create a positive and energetic workout environment...
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It is a very good gym with a variety of gym equipment and a wide range of activities available plus the trainers here are extremely knowledgeable. The ambiance of the place is just beautiful
Limited Trial Spots Available
Try Everything. Pay Nothing. For 3 Full Days.
Not sure yet? That’s exactly why the trial exists. Walk into Flex N Flexi for three full days — every zone, every class, every piece of equipment — completely free. Meet the coaches. Feel the space. Then decide when you’re ready.
- No card required
- No commitment
- No sales pressure
Prefer to talk first? Call +91 62891 35419
Book your 3 free days
Fill in three quick details and our team will WhatsApp you to confirm your free trial days.
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You’re in! 🎉
We’ll WhatsApp you shortly to confirm your 3 free days. Can’t wait? Message us now and we’ll get you booked right away.
Message us now on WhatsAppStraight Answers
Everything You Might Be Wondering
Still unsure about something? Message us — we answer honestly, and we won’t chase you afterwards.
Yes — genuinely free. No card, no deposit, no commitment. Walk in, train for three full days, work with our coaches, and only decide about membership when you’re ready. Just fill in the form to book your days.
Absolutely — most of our members started as beginners. On day one, our trainers do a proper fitness assessment, understand your goals, and build a beginner-safe plan. You’ll never be left to figure things out alone on the floor.
Yes — we’re a fully unisex premium gym with a safe, respectful environment for everyone, including women-specific programmes, yoga batches, and personal training. Ask us about batch timings that are popular with our female members.
We keep it transparent, with monthly, quarterly, half-yearly, and annual plans to suit different goals and budgets — and every journey starts with 3 days free before any payment. Our team will walk you through current plans and any seasonal offers with no hidden costs.
We’re in Kamalgazi, Narendrapur, South Kolkata — PIN 700103, easily reachable from Garia and Narendrapur. Tap “Get Directions” below for the map.
We’re open all 7 days, including Sundays and holidays, from 6 AM to 11 PM — with morning and evening batches to fit around work, study, and family.
Yes. If you need to pause for travel, injury, or other reasons, talk to our team — we handle it case by case, with no unnecessary complications. We believe in long-term relationships, not trapping members in contracts.
With consistent training and proper nutrition, most members notice changes in energy, posture, and body composition within 4–8 weeks, and meaningful transformation within 3–5 months. Your coach tracks your progress and adjusts your plan as you go.
Find Us
Kamalgazi, Narendrapur — Open All 7 Days
3rd Floor, Commercial Building, Citrus Cove, opposite Ujjivan Bank, Kamalgazi, Narendrapur, Kolkata, Rajpur Sonarpur, West Bengal 700103
Open all 7 days · 6:00 AM – 11:00 PM
Your First Step Is Free
Three Free Days. Zero Reasons to Wait.
You don’t have to commit. You don’t even have to pay. Just show up for three days and let the space, the coaches, and the community do the rest. If it’s right for you, you’ll know. If it’s not, you’ve lost nothing.