HIIT & Cardio Classes In Sydney



Athletica Fit™ is one of One Playground’s signature group training classes. A total-body program designed to drastically improve your fitness by injecting elements of cardio, balance, weight work and static-hold toning exercises into a fun, fast-paced routine.


Your ultimate HIIT gym class. Pure high-intensity interval training that is summarised by its title. Not for the faint hearted, but ideal for the strong willed, Limitless™ consists of cardio & strength exercises such as explosive push-ups, weighted lunges, bodyweight exercises and controlled planks.


Our signature barbell class targets all major muscle groups. Using light to moderate weights with high repetitions, you’ll work through a range of exercises including weighted squats, push-ups, lunges and overhead presses.



Sean has been a science teacher for a decade, but he loved his fitness so much he became a qualified personal trainer. Sean loves to push his own limits – so as a coach he’ll push yours, ensuring that intensity is the focus of workout sessions. Sean’s specialty is combining cross-functional fitness with strength building.


Kat is a Certified Group Fitness Instructor & Personal Trainer. Coming from a software background, she is big on capability, has strong attention to detail and is good with numbers (so don’t be surprised if she pushes you to exceed your last personal best).


Tristen likes One Playground so much; he’s our Head of Service and a formidable group fitness instructor outside the office. As a passionate and dedicated coach, Tristen has spent years programming workouts to empower individuals to unlock their full potential and achieve their goals. Tristen’s strength and conditioning coaching is driven by helping individuals discover their unique strengths, overcome challenges, and confidently navigate their personal and professional goals. With the right mindset, dedication and determination, you can achieve anything.

3 reasons why a HIIT Cardio class could be good for you

Up Your Game

HIIT classes (high-intensity interval training) get endorphins soaring, enhance your agility and challenge you to reach your maximum. We don’t believe in boring circuits.

Lift Your Mood

Aerobic cardio exercise has a unique capacity to exhilarate, to stimulate, to calm, to counter depression and to dissipate any stresses that may come with daily life.

Sweat With A Team

Feel team spirit. Be pushed by your instructors, and encouraged by your fellow class members in our HIIT classes. Members who sweat together, stay together!


What is HIIT/Cardio?

Our HIIT classes (high-intensity interval training) are group training classes that involve short bursts of intense exercise alternated with low-intensity recovery periods. They involve anything from sprints to skipping ropes, bodyweight exercises, squat jumps and more. We mix up the class formats because we don’t believe in boring circuits. They range from 45-minute to hour-long workouts. HIIT workouts are great for burning calories, increasing your metabolic rate, assisting with weight loss, increasing strength and tone, improving oxygen consumption, and reducing heart rate and blood pressure.

What should I expect in a HIIT class?

When you arrive at your HIIT class, our instructors will be waiting to greet you. Their introduction will be focused on explaining the class format, what equipment you’ll be using, and will ask if you are working with any injuries or restrictions. Class formats can be tailored to wherever you’re at in your fitness journey, no one is too new or too advanced. You’ll meet an array of instructors, all bringing a unique style to their HIIT classes. We do ask that you please arrive five minutes early to your class so your instructor can start on time.

What do I bring to my HIIT class?

We provide the equipment, the instructors and a one-of-a-kind studio. All that we ask is that you please bring a towel, water bottle (preferably not plastic as we’re not big on that) and your energy! We heavily enforce the towel policy (no towel, no play, no gym today).

What other facilities are available?

Along with our Battleground studio fitted out with an epic sound system, you’ll have full access to our gym facilities. These include our boutique bathrooms that are fitted out with showers, lockers, hair dryers, hair straighteners & botanical soaps.

Can I bring someone?

Of course! When we reach out to book you in, don’t be afraid to tell us who you’d like to bring along to your first HIIT/Cardio class.

We love our community

Everything we do is about creating better
experiences for our members.


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We have classes in categories to suit every goal – whether you want to get stronger, lose weight, increase your cardio fitness or learn new skills.

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