Bonus Episode | A/Prof Heather Massey: The Science of Swimming the English Channel (public lecture)

In this special bonus episode of The Science and Art of Open Water Swimming, we bring you a public lecture from Associate Professor Heather Massey of the University of Portsmouth, recorded during her visit to Perth as part of a University of Western Australia Institute of Advanced Studies Fellowship.

One of the world's leading researchers in cold water immersion, swimmer safety and outdoor swimming, Heather is also an English Channel solo swimmer herself. In this fascinating lecture, she brings together her scientific expertise and personal experience to explore what it really takes to swim one of the world's most iconic and demanding endurance challenges.

Drawing on research from the University of Portsmouth's Extreme Environments Laboratory, Heather explores the physiology of cold water immersion, the body's response to cold shock, cold adaptation and thermoregulation. She explains why swimmers respond so differently to cold water, how insulation and metabolic heat production influence cooling, and why becoming accustomed to cold water can have both benefits and risks.

Heather also takes us behind the scenes of her own English Channel crossing, sharing insights into the preparation, training and practical decisions that helped her get from England to France. She discusses feeding strategies, managing body temperature, the importance of keeping stops short, working with your crew and pilot, and the challenges that swimmers can encounter along the way.

Perhaps most importantly, Heather highlights the things that science can help us understand, the things we still don't know, and why successful channel swimming requires more than simply being a strong swimmer. It requires careful preparation, an understanding of the environment, and the ability to trust the people supporting you when conditions are beyond your control.

Whether you're considering an English Channel crossing, preparing for a long-distance open water swim, coaching endurance swimmers, or simply fascinated by the science of human performance in cold water, this is a lecture full of valuable insights.

This recording is from a live public lecture, so you may hear occasional references to slides and images. For the full presentation experience, you can also watch the video version on YouTube.

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This interview was recorded on Whadjuk Noongar Boodjar. I acknowledge the Noongar people as the Traditional Custodians of these lands and waters and pay my respects to Elders past and present.