What does real longevity look like when you’ve lived at the sharp end of performance?
In this episode of Performance People, Georgie is joined by Dr Tamsin Lewis, longevity physician, psychiatrist, former GB triathlete and founder of Wellgevity, for a wide-ranging conversation about health, performance and what it really takes to sustain both over time.
Tamsin reflects on her journey from elite sport into medicine, and how triathlon became both a focus and a turning point during a period of stress, overwork and unhealthy coping mechanisms. She speaks candidly about anxiety, eating disorders, perfectionism, validation, and the darker side of high achievement, as well as the role competition, challenge and community can play in transforming behaviour.
The conversation also explores the bigger picture of modern wellbeing: burnout, relationships, diet, environment, nervous system regulation and the daily habits that can either protect or deplete us. This is an episode about much more than living longer, it is about living better, with greater awareness, resilience and intention.
In this episode:
* Dr Tamsin Lewis’s journey from elite triathlon to longevity medicine
* The relationship between high performance, stress and self-sabotage
* How exercise can become a healthier outlet for pressure and anxiety
* Why burnout protection goes beyond sleep and nutrition
* The role of relationships, environment and nervous system health
* Perfectionism, validation and the psychology of achievement
* What sustainable health actually looks like in real life
00:00 Introduction
00:23 Meet Dr Tamsin Lewis
01:18 How triathlon changed everything
04:12 Competition, stress and overtraining
07:11 What good coaching really does
08:57 Female performance, fuelling and training differences
13:06 Burnout, elite sport and building a business
17:00 The hidden cost of pushing too hard
20:02 Mold, Covid and immune system overload
23:45 Burnout, cortisol and recovery
25:00 What longevity should actually mean
32:16 How to future-proof your health
________________________________
The Performance People podcast, in partnership with J.P. Morgan Private Bank, talks to high-performers in the world of sport and beyond, to bring defining moments, hard-earned insights and expert advice to everyday performance. New episodes every Tuesday.
________________________________
ainslie + ainslie NIGHT POWDER, winner of Best Sleep Supplement in the GQ Sleep Awards 2025.
We love performance, which is why we’ve launched ainslie + ainslie – the first supplement brand to be developed inside elite sport. Now available for everyone. Find out more at www.ainslieainslie.com
________________________________
Connect with Performance People
Hit subscribe today for the latest.
🎧 Spotify/Apple Music
http://www.performancepeoplepodcast.com/
https://www.instagram.com/performance.people/
________________________________
The views and opinions expressed on Performance People are those of the guests and hosts, and do not necessarily represent the views of ainslie + ainslie, J.P. Morgan Private Bank, or any affiliated organisations.
This podcast is produced by Gameface Limited and is intended for general information and entertainment purposes only.
© Gameface Limited 2026. All rights reserved.
","author_name":"Georgie Ainslie"}