"Hotwired is revelatory, a fascinating exploration of heat as a fundamental pillar of health. With scientific rigor and narrative grace, Gifford illuminates how thermal stress activates our deepest biological pathways toward resilience, metabolic optimization, and authentic longevity. This is essential reading for anyone committed to understanding the potential transformative alchemy of their own physiology." - Sara Szal, MD, New York Times bestselling author of The Hormone Cure and Women Food and Hormones

Fascinating. Gifford shows-through science and sweat-that heat isn't the enemy. It's a superpower we've forgotten how to use. - James Nestor, New York Times Bestselling Author of Breathe

"Gifford skillfully navigates the many strands of aging research to create an entertaining narrative of the perils of getting old." - Kirkus Reviews

"Hotwired is a gripping investigation into the power of heat and how it shaped our evolution and can still transform our physical and mental health today. Bill Gifford makes the science come alive, reminding us that the path to a stronger body and mind often runs straight through discomfort." - Michael Easter, New York Times bestselling author of The Comfort Crisis and Scarcity Brain

"Read this book! Hotwired is a masterpiece of story-driven science that unpacks that health benefits of heat, and ultimately reveals how sweating together can not only make us healthier, but happier and more connected." - Dan Buettner, National Geographic Fellow, New York Times bestseller and founder of the Blue Zones