Dr Peter Attia is the founder of Early Medical, a medical practice that applies the principles of Medicine 3.0 to patients with the goal of lengthening their lifespan and simultaneously improving their healthspan. He is the host of The Drive, one of the most popular podcasts covering the topics of health and medicine. Dr Attia received his medical degree from the Stanford University School of Medicine and trained for five years at the Johns Hopkins Hospital in general surgery, where he was the recipient of several prestigious awards, including resident of the year. He spent two years at the National Institutes of Health as a surgical oncology fellow at the National Cancer Institute, where his research focused on immune-based therapies for melanoma. He lives in Austin, Texas with his wife and three kids.

Bill Gifford is a respected writer who writes about extraordinary athletes and cutting-edge health science. He is the co-author of the global bestseller Outlive and New York Times bestselling author of Spring Chicken. His work has been featured in Men's Health, Outside magazine, Wired and Bloomberg. He lives in Salt Lake City, Utah.