Charles Brenner, PhD is the chair of the new Department of Diabetes & Cancer Metabolism at the Beckman Research Institute of the City of Hope National Medical Center. He is a major contributor to work on nicotinamide adenine dinucleotide metabolism, who discovered the eukaryotic nicotinamide riboside (NR) kinase pathway.

Light Watkins is a globally-renowned meditation teacher, speaker, and author of Bliss More: How to Succeed in Meditation Without Really Trying. We discuss monogamy, marriage, and divorce, how to beat the perpetual feeling that the grass is always greener on the other side, how to get out of your own way to achieve big goals, and how to fight racism.

Michael Breus, PhD is a Clinical Psychologist and both a Diplomate of the American Board of Sleep Medicine and a Fellow of The American Academy of Sleep Medicine. Dr. Breus was recently named the Top Sleep Specialist in California by Reader’s Digest, and one of the 10 most influential people in sleep. He is the author of The Power of When: Discover Your Chronotype--and Learn the Best Time to Eat Lunch, Ask for a Raise, Have Sex, Write a Novel, Take Your Meds, and More.

Rich Roll is an ultra marathoner, podcaster, and author of the new book Voicing Change: Inspiration and Timeless Wisdom from the Rich Roll Podcast.

Pedram Shojai is a Taoist abbot, a doctor of Oriental medicine, a kung fu world traveler, a Qigong master, and the author of the new book Focus: Bringing Time, Energy, and Money into Flow. His previous book, The Urban Monk: Eastern Wisdom and Modern Hacks to Stop Time and Find Success, Happiness, and Peace, is a New York Times best-seller.

Sal Di Stefano is a personal trainer with 20+ years in the fitness industry. He brings together science and practicality to crush fitness myths and provide effective, real world advice to the masses.

Anya Fernald is the CEO of Belcampo, a 27,000 acre organic farm in NorCal. She's a world-renowned meat and farming expert and chef. 

Dr. Rudy Tanzi is a Harvard neuroscientist, Director of the Genetics and Aging Research Unit at Mass General in Boston, and a pioneer in identifying genetic markers for Huntington's and Alzheimer's diseases.

Vani Hari, more commonly known as the Food Babe, is an activist, blogger, and NY Times best-selling author of the new cookbook, Food Babe Kitchen: More than 100 Delicious, Real Food Recipes to Change Your Body and Your Life.

Ashleigh VanHouten is a health and nutrition journalist, podcast host, health coach, Paleo diet expert, and the author of It Takes Guts: A Meat-Eater's Guide to Eating Offal with over 75 Healthy and Delicious Nose-to-Tail Recipes.