Our Team

Brent Cosnett

Brent Cosnett

Co-Founder and Head Coach

I’m the founder and head coach of Cosnett Training Systems. I’ve been fascinated with everything to do with training and nutrition since I started training myself when I was 16 years of age. Learning everything I could in an effort to make me strong, healthy, athletic and shape my body how I wanted it. And this is still a work in progress today. This search for knowledge has led me to my passion – training others and teaching them the methods to achieve their health and fitness goals and the body they desire which I am now lucky enough to do every day.

My philosophy when it comes to changing your body and improving performance can pretty much be summed up by the motto on the homepage: “Build Your Lifestyle Build Your Health Build Your Body”.

The only way to achieve long-lasting results is to make changes to your lifestyle and habits. I also put a big emphasis on improving health and believe you need to get healthy to lose fat, not the other way round like most people try to do. I focus on improving lifestyle, health and body with all my clients as this not only gets quick results, it get results that last.

Those that try and get the body they want at the expense of their health never have long-term success and always end up back at square one.

As far as qualifications go, I got my degrees in Exercise and Sports Science and Sports Management from Deakin University which I completed in 2012. As well as this, I’ve done a handful of other courses including:

  • PICP Level 1 Regional Strength Coach
  • PICP Level 2 State Strength Coach
  • BioSignature Modulation Practitioner
  • BioSignature Level 2
  • The Art and Science of Biochemical Individuality

Sara Duncan

Sara Duncan

Specialised Coach

It’s like the saying ‘it’s never too late to start’ and that’s exactly like my story when it comes to being a Personal Trainer/Strength Coach.

I was always the sporty kid at school, but my true passion has always and will always be netball, I started playing when I was 9 years old and my greatest achievement so far was when I got selected to play in the Victorian Netball League back in 2012 and with each season that starts I want to jump higher, run faster, be stronger and be the best netballer that I can be. So in 2012 one of my friend’s told me to come along to a CrossFit session to improve my fitness and get stronger, as I hadn’t done much strength work before I was nervous, but after one session I was hooked. So right then and there I found another passion; a passion to lift heavy weights, pushing my limits and to change my diet which lead me to losing weight and being more confident.

For over the past decade I have been coaching netball, from net-set-go (6 year olds) all the way up to premier league division, I love seeing the players improve their skills week by week and seeing all the hard work at trainings pay off during their games.

This is when I decided to quit my job as a Automotive Mechanic and complete my Certificate 3 & 4 in Fitness, I then went on to complete my Level 1 in Crossfit and starting coaching Crossfit. I coached at a CrossFit gym in Sandringham for 2 years and then moved into a Personal Training/Strength Coach role at CTS in September 2015.

Since September my drive to become a better coach has gone through the roof, I want to go out and do more fitness courses and learn different aspects of the fitness industry and push my body to even higher limits.

With the help from Tyler & Brent I know that this was the right career choice as I want to help people change their lives for the better, I want to see them hit that PB, I want them to keep making goals and reaching them. Overall, I want every single person I coach to become the best version of themselves that they can be.


  • III & IV Fitness, Master Personal Trainer
  • Level 1 CrossFit Coach
  • Level 2 First Aid