Join a community of local members in Doncaster getting fit & healthy.
Hi, I’m Carly – Owner and Head Training Coach at Flex Wellbeing & Fitness.
My passion is helping people achieve their fitness goals, build confidence, and feel strong – both in and out of the gym.
At Flex, we specialise in Class Sessions and Small Group Personal Training, offering expert guidance, structured programmes, and a friendly community that keeps you motivated.
Our training style combines effective workouts with practical nutrition advice to deliver results fast – without shortcuts or pressure. You’ll learn proper technique, gain confidence using equipment, and stay supported every step of the way.
View our timetable >
Not sure where to start?
Join one of our free open group sessions >
At Flex Wellbeing & Fitness, our goal is simple – to help you gain the confidence you
need to train effectively in any gym environment.
We don’t do overcrowded classes or guesswork. Every session is hands-on, coached,
and designed to help you feel stronger, move better, and achieve lasting results


Our small-group sessions combine personal attention with the motivation of training together.
Our structured, community-led approach makes Flex Wellbeing &
Fitness unlike any other gym in Doncaster.



Posted on Dawn WhittakerTrustindex verifies that the original source of the review is Google. I was never a person. Who enjoyed the gym, struggling to understand what weight I should like, or if I was doing it correctly. Always opting for classes to improve my fitness At flex I have been taught the technique plus an understanding of the weight I am capable of lifting, along with how to safely push myself. I am now leaner, healthier and bench pressing more than ever. The gym is friendly, supportive and a great place to train, with no judgement from anyone. Recommend to anyone no matter where they are on there fitness journeyPosted on Sarah STrustindex verifies that the original source of the review is Google. I love this place! If you’re looking to improve your fitness and wellbeing then give Flex a try. Since joining Flex my fitness & muscle tone has improved, along with my self-confidence. I’ve met loads of lovely people who have since become friends too. Flex is a supportive place no matter your age, gender, size or ability. A great range of sessions are available across the week and at different times of the day. 👍🏼Posted on mandy AshtonTrustindex verifies that the original source of the review is Google. Flex Wellbeing & Fitness is an amazing gym, a gym like no other I've encountered. I've been a member at Flex since February and can honestly say my body has never changed so much...and I credit this to the new owner and PT Carly Adkins I decided that aswell as Flex lift classes, I would enrol for a 3 month PT ( personal training classes) , which I take 1 per week. My goal was to do a pull up. With Carlys experience and technique I was able to achieve this much quicker than I anticipated. The shoulder, bicep, triceps and back exercise regimes she pushes me through have increased my upper body strength more than I thought possible. I also attend lift classes with my husband there, which we thoroughly enjoy, performing a range of exercises including deadlift, bench press and leg press. Tracy ,PT, also works us hard on the fab circuit classes and works the room with ease and confidence , encouraging everyone to work to their best ability . If you want to train in a great facility with great PTs who really want you to achieve, who ensure you perform exercises correctly, then give Flex a try, you won't look backPosted on Geraint EvansTrustindex verifies that the original source of the review is Google. I’ve been part of Flex for over 12 months, and it’s honestly been life-changing. This isn’t just a gym—it’s a community of like-minded people who support and motivate each other every day. The training is top-notch, with everything from deadlifts, bench press, and bicep curls to kettlebell and shoulder exercises. There’s always something new to challenge yourself, whether it’s an intense ab exercise session or prepping with a great pre-workout routine. I particularly love the circuit sessions for that cardio hit! Beyond the workouts, Flex has helped me build incredible friendships and improve my overall wellness. The positive atmosphere makes fitness fun and sustainable. If you’re looking for a place that combines expert training with a welcoming community, Flex is the place to be!Posted on Priya MagonTrustindex verifies that the original source of the review is Google. ‘Go on.. you can do it!!’ These words have followed me through my PT sessions with Carly at Flex Wellbeing & Fitness since it opened. The encouragement to strive and perform better than the last session is one of the main reasons that keeps me going and would be one of the main reasons I’d ask anyone who is interested in getting into fitness or would like to become fitter to join Flex. I joined as a complete gym/fitness novice; being on the chubby side, yes I’d tried numerous attempts at trying to get fitter on my own at a variety of gym establishments but the main element lacking was guidance. I didn’t know what my limits were or could be until I joined the PT sessions here. I’d heard of the common gym terms/exercises like bench press, deadlifts and bicep curls but never had the opportunity to try them out as commercial gyms don’t have the 1:1 guidance. I feel my fitness growth has excelled immensely over the past few months and I’ve managed to drop two dress sizes so it can’t be all that bad :) I’ve only done a few group sessions but everyone I’ve met so is very friendly and I believe the other trainers there are also very good. You won’t regret joining Flex Wellbeing & Fitness.Posted on Steph BakerTrustindex verifies that the original source of the review is Google. This isn’t just a gym it’s community of like minded people who want to learn how to be fit and strong without fear and trepidation. Learn how to bench press and deadlift with confidence. Be able to swing that kettle bell like a boss. Bicep curl to get the guns 💪 of your dreams. Laugh, dissolve the anger and get mentally fit along the way. Carly and Tracy are absolutely amazing PT’s. Who push you to achieve greatness and discipline. It doesn’t matter what age or ability the Flex family have your back. So if you want to gain strength and fitness this is the place to be 💪💪❤️. Best gym in town with the best clientele of course.Posted on Phil HeptinstallTrustindex verifies that the original source of the review is Google. I’ve been training with Flex wellbeing & fitness and I can confidently say Carly is one of the best personal trainers I’ve worked with. Carly is knowledgeable, encouraging, and truly committed to helping her clients reach their goals. Every session is well-planned, challenging, and tailored to my individual needs. What I appreciate most is Carly’s attention to form, technique, and safety. Carly pushes me just the right amount and makes every workout both effective and enjoyable. Thanks to Carly’s guidance, I’ve seen real improvements in my strength, energy, and confidence. The Gym is full of friendly individuals who are always welcoming. If you’re looking for a dedicated and skilled PT who genuinely cares about your progress, I highly recommend Flex wellbeing & fitness.Posted on Graeme KeaneTrustindex verifies that the original source of the review is Google. Best place I’ve ever trained. If you want results, this is the place to come. Carly pushes you to limits you didn’t realise you could achieve. It’s like being trained by the T-X from Terminator 3. Currently fully stacking the sit-down bench press (3 sets of 12), 3 months ago, I could only manage 6 reps in total. You’ve basically got your own professional personal trainer, even though in small groups, every session is tailored to suit each individual. The previous session you did is always logged and changed, so you’re always doing different body parts from one session to the next. Tracy has started leading the PT sessions on the odd Friday session, who is also very highly motivating. I’d compare her to Mr. Motivator… but white.Posted on Jayne WaltonTrustindex verifies that the original source of the review is Google. ⭐️⭐️⭐️⭐️⭐️ Absolutely fantastic gym! The atmosphere is always so welcoming and friendly — you feel comfortable the minute you walk through the door. A special shout-out to Carly, my PT, who is genuinely amazing. She’s incredibly knowledgeable, supportive, and knows exactly how to push you in the best way. Her sessions are motivating, fun, and tailored perfectly to my goals. I’ve never felt stronger or more confident. Highly recommend this gym and especially Carly — she’s an absolute star! 💪✨Posted on Jamie QuinnTrustindex verifies that the original source of the review is Google. Really recommend this gym! Everyone is so nice and welcoming. I go to boxfit and I absolutely love it. XxVerified by TrustindexTrustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more
It couldn’t be easier to get started with Flex Wellbeing & Fitness — your
journey to strength, confidence, and lasting results begins here.
Book your free intro session and visit the studio to meet Carly and the team.
We’ll talk through what you want to achieve and build a plan that fits your schedule.
Join your first session, meet the
community, and begin your journey to lasting results.
No. All our sessions are fully coached, technique-led, and suitable for every fitness level.
You’ll meet your coach, learn the basics of the session, and move at a pace that feels comfortable. There’s no pressure and no judgement.
Group Sessions are structured classes with community energy and expert coaching.
Elite PT offers personalised, goal-focused training in smaller groups, with nutrition support and progress tracking.
Yes. Lift sessions are designed to teach proper lifting technique and build strength and confidence.
Yes. Our Lift Teens sessions are for ages 11+, teaching safe and effective weight training with full supervision.
Lift sessions: up to 12 people.
Elite PT: up to 6 people.
We offer unlimited membership tiers that give access to all group sessions including FlexLIFT, FlexCIRCUIT, BoxFIT, Spin, and Boogie Bounce.
Yes — we offer open group sessions for newcomers to experience Flex before committing.
Elite PT includes personalised nutrition guidance such as protein targets, calorie guidance, and optional food plans.
Comfortable training clothes and water. All equipment is provided.
Yes — coaches can adapt movements if you are medically cleared to exercise.
Absolutely. Most of our members felt the same at first. Our environment is friendly, supportive, and beginner-focused.
Most members notice improvements in confidence and strength within a few weeks. Physical changes follow with consistency.
Yes. Elite PT is ideal for beginners who want more structure and support.
Timetable
App
Results
Testimonials
Contact
Opening Hours:
Monday: 6 am–8:30 pm
Tuesday: 6 am–8:30 pm
Wednesday: 6 am–8:30 pm
Thursday: 6 am–8:30 pm
Friday: 6 am–7:30 pm
Saturday: 7:30 am–5 pm
Sunday: 9–11:30 am