Our Trainers
Meet XS Fitness’s professionally trained, experienced, qualified and friendly personal trainers to help you reach your fitness goals.
Callum Tuffield
Gym Manager & Personal Trainer
Callum has a Bachelor of Sports Science from UWA and is currently completing his Honours. He is also a student member of Exercise & Sports Science Australia (ESSA). Callum’s vast array of skills caters for anyone. Callum is approachable, relatable with flexible time-slots and can tailor a training solution to anyone’s needs and budgets.
Callum works with sports performance, strength training, fat loss, flexibility, functional training and conditioning, muscle development, and general nutrition.


Rhys Thomas
Strength Training | Powerlifting | Muscle Development | Programming & Goal Setting | Fat Loss | General Nutrition | Motivation & Support

Greig Sullivan
Personal Trainer
Greig has always been passionate about health, fitness and nutrition since diving into competitive sports like rugby union and rugby league. This led him to advance his knowledge in strength and conditioning training and many other areas of the fitness industry, turning what he loves and lives by into a career.
Greig specialises in muscle development, strength and conditioning, fat loss, motivation and support, resistance training, goal setting and programming, and advice on nutrition and supplements.
Frede Guthrie
Personal Trainer
Frede started lifting weights at age 19 and has been working as a Personal Trainer since 2008. She spent five years as a competition female bodybuilder and is an expert in her field.
IFBB Ms WA female bodybuilding 1st place 2008
IFBB Miss Australia female bodybuilding 3rd place 2008
IFBB Ms WA female Bodybuilding 1st place 2013
IFBB Ms Australasia Female Bodybuilding 1st place 2013 Ms Australasia 2019

Lucy Ford
Personal Trainer
Lucy has a Certificate 4 in Fitness and is passionate about helping people better themselves. She believes that anyone can achieve their health and fitness goals with the help of a good trainer. Lucy is knowledgeable with flexible time slots and affordable pricing.
Lucy specialises in muscle growth and repair, fat loss, strength and conditioning, and glute growth.

