1-677-124-44227 184 Main Collins Street, West Victoria 8007 Mon - Sat 8.00 - 18.00, Sunday CLOSED
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Undefinable FITNESS & LIVING Hollistic Training

About Undefinable

About our founder and undefinable team...

Undefinable Membership

Welcome to the Undefinable platform...

One:One Coaching

Sadie will help you find a perfect workout...

Who is our


Sadie Gibbs journey as an athlete has been life-long, and has led her to a career as a holistic life coach. She want's to help others achieve their own success...

Undefinable Platform


Perfect for those looking to incorporate diverse training, improving strength, fitness and overall wellbeing; Minimal equipment is needed...

I went to Sadie for online nutrition and training advice, but what I got was so much more than that. I learned about mindset, overcoming obstacles and blocks that had held me back from my goals.

Lawrence Henry PT Client

Sadie is the best!!! She knows just how far to push you, when you don’t think you can work any harder she gets that little bit more out of you.

Rachel Adams PT Client

Sadie is an excellent trainer. She’s committed to your progress and creates workouts which are designed to help you succeed.

Kari Swindon PT Client

I feel so much stronger (both physically and mentally) . She has quite simply transformed my life in such a short amount of time and I cannot recommended her highly enough!

April Warwick PT Client

Latest Merchandise

Check out our most recent exclusive merchandise.

Undefinable Apparel


Our complete range of bespoke apparel. Designed to suit you and your lifestyle.

Undefinable Fitness Goals

Whether you're looking to train at home or in the gym, Sadie is here to help you with everything from online coaching, nutrition plans and 1 to 1 Coaching.

Each workout can be done from the comfort of your very own home

Calorie controlled and guaranteed weight loss.

Want to feel part of something? Train with us today.

Bespoke training plans designed for your lifestyle.


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