Arj Thiruchelvam
Performance Coach • Running Coach • Nutritionist • BBC Contributor
PROVIDING CLEAR AND CONCISE SPORTS, FITNESS AND NUTRITION SOLUTIONS
Owner of Performance Physique
Arj Thiruchelvam is a UK-based performance coach, running coach, and nutritionist working across sport, health, and human performance. With over 20 years’ experience in the performance and health sector, he has supported athletes ranging from complete beginners to Olympic-level competitors. He has co-written two sports science degrees for Oxford Brookes University during his time as a University Lecturer.
Arj is a BBC contributor and public speaker, regularly sharing expertise on endurance performance, training methodology, and applied nutrition. His work spans elite sport, corporate health, and youth athlete development, and he is the founder of Performance Physique, a performance coaching company delivering evidence-led training and nutrition support.
He has worked alongside world-leading practitioners including Martin MacDonald and Mac-Nutrition, contributed to performance mentoring within UK Athletics sprint and jump pathways, and continues to support athletes and active individuals in achieving long-term, sustainable performance improvements.
My Coaching Philosophy
Hi, I’m Arj — and I want you to stop listening to the noise.
The fitness and nutrition space is crowded with trends, extremes, and misinformation. My role is to cut through that and focus on what actually matters: clear thinking, evidence-led decision making, and long-term progress.
Across more than two decades working in sport, nutrition, and performance, I’ve coached everyone from first-time participants to Olympic athletes. Whether it’s improving performance, restoring confidence, or building sustainable habits, my aim is always the same — to help people realise what they’re capable of.
If you’re ready to make a change, explore my work at Performance Physique.
Arj Coaching at Friday Night Track Club in Solihull
"I am tired of people being misled, told that they can't achieve something and that they need to follow a particular, strict regime. That's rubbish and I'll show you how."
If you need an expert comment, media appearance (tv, radio, online or written) or if you're after a corporate well-being presentation, then please drop me a message below and I'll personally reply to you.
Thank you!
Or why not e-mail me, Arj@ArjThiruchelvam.com
