About Tristen
A coach who sees the whole person.
Sports and clinical nutrition, health coaching, endurance experience and a connected approach to health, performance and longevity.

Your coach
Meet Tristen Oosthuizen.
As a registered Sports Nutritionist, Clinical Nutritionist and qualified Health Coach, Tristen understands that progress rarely comes from one meal plan, one test or one number. The work is personal, involved and grounded in what will make a meaningful difference.
With 10 years of auditing experience, and being an endurance athlete himself, he understands the reality behind the data: the training load, the race-day pressure, the recovery gaps and the commitment it takes to follow a plan through. With years of juggling work, studies and training, Tristen appreciates the challenge of maintaining a healthy lifestyle with the business of life.
Prior to studying nutrition, Tristen had worked with numerous nutritionists and realised something was missing. Meal plans were provided and follow ups were done, but there was no discussion about other areas of life that could profoundly impact health, performance, and longevity.
While completing his studies he started to understand what really drives the needle in the right direction. This is where the framework of Linked Health & Performance was born, the 6 pillars of lifestyle medicine. He understands that no pillar needs to be perfect to drive the needle in the right direction, but small changes to each pillar can make a profound difference to health, performance, and longevity.
In their words
Practical changes, measured against real life.
Individual results vary. Every plan is shaped around the person, their starting point and what they are working towards.
At 56 years old and weighing 138 kg, I knew I needed to change. Working with Tristen has been nothing short of life changing. He helped me get my eating habits on track in a way that felt sustainable and realistic. For the first time, I have been able to lose weight consistently without sacrificing muscle mass. The results speak for themselves: my overall health has improved dramatically, and my diabetic score is now below the pre-diabetic range, a milestone I never thought I would reach. Tristen’s guidance, knowledge and support have made this journey achievable and empowering. I feel stronger, healthier and more confident about my future. If you are looking for a coach who truly understands how to create lasting results, Tristen is the one.
As an everyday CrossFit athlete with a physically demanding day job, Linked Health & Performance’s expertise in sports nutrition has boosted my performance immensely whilst maintaining my weight, which was my initial goal. With their guidance and tailored nutrition plans, I now understand the importance of food diversity and nutrient timing, and my energy levels finally meet the demand of work and training. The fortnightly check ins really show they care about their clientele’s progress.
Working with Linked Health & Performance has not only helped me achieve my nutritional and weight goals, it has helped me understand that nutrition plays such a huge role in my day to day life. My energy levels have increased dramatically, and I am no longer having broken sleeps which was a nightly occurrence. The personalised meal plans have distributed my macros sensibly throughout the day so I am actually utilising them, which has enhanced my training performance and recovery time.
Reflecting on my journey with Linked Health & Performance under the guidance of Tristen Oosthuizen, I am filled with immense gratitude for their exceptional expertise in sports nutrition. Their personalised approach has been instrumental in helping me achieve my fitness goals as a CrossFit athlete. Through their support I have witnessed a remarkable improvement in my performance, accompanied by a deeper understanding of how nutrition impacts every aspect of my health. What sets Linked Health & Performance apart is their ability to craft tailored nutrition plans that are not just effective, but also practical and easy to integrate into my daily routine.
Your next step
Ready to see your health differently?
Start with a free 15-minute discovery call. No generic programme, no testing for the sake of it, just a useful first conversation.

