Terrible gym with an even more terrible atmosphere; replete with roided-out, agressive, smelly powerlifters who cannot properly digest their protein powder. These ogres run the gym. One of them was doing supersets with at least THREE machines AND using the most popular curl bar (40lbs). When I told him that was bad gym etiquette and proceeded to use the curl bar anyway he started stalking me around the gym. I told the manager and she 100% sided with him and saw no fault in what he was doing. She childish responded well, you do supersets too!. I do do supersets with mutliple peices of equiptment, but if someone starts using the equipment that Im not currently on, I understand that I have ZERO right to hog all that equipment and I let the other person use it no questions asked.

Hands down best staff and gym. Everyone there (especially the employees) are extremely enthusiastic about bettering the mind and body. Don’t believe me? Go ask Roberto (the owner) about body recomping, fasting, hot/cold contrast exposure. Questions about how to keep your knees from caving in during squats? Ask Courtney (the personal trainer) which exercises will contribute to strengthening those muscles. Overall, everyone is friendly and supportive and sometimes there is a dog so that is a +.

Best gym in Jax! I worked out here for nearly 2 years and can say without a doubt this is the best gym I have ever been to. The staff was always friendly and willing to help, and there is an abundance of great equipment to use for all kinds of personal fitness training methods.

Best gym in Jax! Don’t waste your time and money at one of those big chain gyms that have basic equipment. Staff is friendly, knowledgeable and professional. Facility is clean and the equipment is always in working condition. Would highly recommend you cancel any membership you have at any other gym and join FLEX!

I recently joined FLEX after being a member at Baileys for 8 years or more! I have to say hands down this is the nicest gym in Jacksonville! 100% best equipment and the gym is kept very clean! I love it is not over crowed either so you can actually go in and get a workout done!

Make sure you bring headphones! If you’re a music purist your ears will bleed, 80% of time they are playing terrible Hip hop, pop, Rock n roll EDM mashup remixes that aren’t even good. The other 20% they’re playing actual original music that I actually enjoy, not that tik tok bsThe equipment is decent, I wish they had an outdoor option but it seems like they’re working on it.Bathroom is a little ancient tooBut the gym is nice overall and the workers(not the manager) seems to be a bit awkward and give off a don’t talk to me vibe but that’s just my experience.

Gym is great and has all the equipment you can imagine. They have a heavy equipment room in the back and an outdoor yard. Bathrooms are clean and organized.

Best gym in Jax if you don’t need classes. Ruined other gyms for me. So much space here.

This place is definitely the best place to workout. Just recently became a member with my friend and we are absolutely hooked already. Id say they have by far the best gym equipments from any other facilities Ive tried before

By far the best power lifting gym Ive been to while in Jacksonville. Amazing professional and caring staff, and clean and plentiful equipment to use. Sadly had to stop my membership due to the distance it from my place and work, but would gladly rejoin if I were closer to that area!

Top notch equipment.. strength room also a great addition, really enjoying this gym!

This is my church. No MEATHEAD buzzers and a great environment. This is my favorite gym Ive been a part of. After being here two years it is like a little family. Just be consistent.Hack squat machineBody Fat Measurement Machine(like Bodpod)Personal Trainers that are actually in the gameClean home like bathrooms with showersStrength room!!I love this place.

Gots a reverse Hyper, sleds, belt squat and a monolift. If you know you know.

Excellent equipment, genuinely nice people, comfortable atmosphere, and its never too busy even when I go after work (whereas most other gyms are overrun past 5PM.) The location is very convenient as well given I get right on/off the highway which is one light away.

Great gym! Awesome staff and members. Never have to wait for a squat rack because they have a ton of them. Highly recommend you check them out.

Not for old people

Great gym! Only downside I see is the powerlifting room is closed on Sunday. Tons of equipment, good atmosphere! I would recommend it to anyone.

Facility is very good. Always clean, machines in perfect working order. Never very crowded during the day.

Best gym in Jax with the best Equipment available for both powerlifters and bodybuilders! Equipment is always available when you need it

If youre looking for a gym that has plenty of squat racks, benches, Olympic platforms, and is almost never busy at night, youll like this gym. Depending on whos working, the playlist on the stereo can be hit or miss, but bad music never stopped a gym from being good.

I was like a kid in a candy store. So much to offer and you Just cant fit in all the fun in one gym session. A must see location, have to experience for yourself.

Best gym in jax! Come see for yourself.

Good gym more geared to gaining muscle. There carido section sucks, and they need to turn there AC temp down, or put up fans or somthing, its way too hot in there !!!!!!!

Love it here and there strength room has all the good stuff there no body around has it

Best gym in Jacksonville. Variety of equipment for any style of exercise.

Hands down the best gym for strength training in town!!! Ive been working out here for a little over a year and not once have I had to wait for a bench or a power rack. Most of FLEXs space is dedicated to free weights, cable machines and isolation machines and there is a lot of hardware that you wont find anywhere else in Jax. Theres also a small stretch of astroturf and a yard for prowler sleds and tractor tires. The staff are professional, friendly and and very helpful. I only wish they had a sauna, but thats minor gripe compared to all else you get from this gym.

Im from out of town and this place was a saving grace! Ill be back every time Im back in town. They have equipment for powerlifting, weightlifting, strongman, body building, Crossfit, everything! Good people, great atmosphere.

Best gym in jacksonville by far. Ive been to The Gym, Training ground, all of the Baileys and both ymcas and this place is by far superior.

Friendly & helpful staff workers goes be young their duties to please everyone.

Top of the line equipment, competitive pricing, helpful and knowledgeable staff. You dont need a judgement free zone to feel comfortable here.

Best gym in jacksonville

Great gym. Very clean has lots of good power lifting and Olympic lifting equipment at a great rate!

This place is the best commercial gym in Jacksonville FL. It has actual strength training equipment (monolith, belt squat, bumper plates, tires, sleds, and no shortage of squat racks), and room to actually use the toys and lift. Something other commercial gyms cant seem to understand, just because there is 8 Sq. Ft of empty floor space doesnt mean you have to stick yet another redundant machine in it that will rarely get used. But I digress. Yes, you can actual weightlift (Olympic) here and drop the bar because common sense, and bumpers. Something my old gym wouldnt let me do unless I could lower the bar softly (WITH BUMPERS!). trying to lower a max snatch is just asking for a tweak or tear. Because there is actual legit real strength equipment, the patrons are all pretty serious about their training and are more intelligent, courteous, and aware...which is almost impossible to come by in all the commercial (globo) gyms Ive been in. The staff is cool AF too, which helps, because there are no stupid rules (usually caused by idiot patrons and most gyms).

Best gym in Jax... hands down.- @theabchick

I love love this gym !! very down to earth atmosphere, great place to work out. Owner is very sweet and helpful .

Top to bottom this place is everything you want in a gym. Equipment is on point, facility is maintained very well and the ownership is awesome.

Just joined recently. Definitely the best gym in Jacksonville.

Top notch gym all around from the equipment and layout to the down to earth owner.

Great facility and equipment. Best in Jax by far.

Its gains o clock at flex fitness ! What yeaaa buddy !!!

Super clean place, really helpful and nice staff

Overwhelming choices of equipment to use! Great place to work out!

Great workout environment and helpful staff!

Friendly, clean, brand new equipment, plenty of space!

Honest to god the greatest gym in Jacksonville!

Best gym in Jacksonville!

Nice Gym.

Best Gym in Jax!

Gym sucks they dont do one day passes

Its like Arnold and Bruce Lee had a baby and Florida Extreme popped out.

Love this place.

The best!!!