Performance Nutrition: What Really Matters? | Prof Shawn Arent

In this episode of We Do Science, I’m joined by Professor Shawn Arent to explore what still matters in performance nutrition and how to separate established scientific principles from changing trends. We discuss what has evolved in sports nutrition, which fundamentals remain important, and what matters when translating scientific evidence into real-world practice.

Shawn explains why hydration, carbohydrates and protein remain central to athletic performance, while addressing common misconceptions around nutrient timing, the anabolic window and fasted training. We explore the relationship between nutrition, training stress and recovery, why individual circumstances matter, and why advice intended for the general population may not always apply to competitive athletes.

We also discuss the practical challenges of working with athletes and coaches, including how to communicate scientific evidence and build effective relationships. Shawn shares insights from his experience in elite sport, exploring the value of performance testing, body composition assessments and biomarkers. We examine the limitations of measurement tools, the importance of interpreting results correctly, and why collecting more data doesn't necessarily lead to better decisions.

Whether you’re a sports nutrition practitioner, coach or athlete, this conversation explores how to identify what genuinely matters in performance nutrition, apply scientific evidence effectively, and make informed decisions based on the needs of the individual athlete.

CHAPTERS

00:00 Introduction

03:00 Introducing Prof. Shawn Arent

10:00 What's changed in performance nutrition?

15:30 Nutrition myths, trends and pseudoscience

20:35 The fundamentals: Hydration, carbohydrates and protein

25:10 Energy deficits, training stress and recovery

31:25 Individual needs and the relationship with food

39:00 Communicating science to athletes and coaches

49:20 Performance testing, monitoring and biomarkers

1:01:20 Interpreting results and measurement limitations

1:07:00 Body composition and tracking athlete progress

1:15:00 Blood testing, wearables and performance data

1:25:30 Key takeaways and practical applications

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Connect with Shawn:

LinkedIn: https://www.linkedin.com/in/shawnmarent/

Connect with Laurent:

Website: https://www.laurentbannock.com

Instagram: https://www.instagram.com/laurent_bannock