Dr. Greyson’s research for the past half century has focused on the aftereffects and implications of near-death experiences and has resulted in more than 100 presentations to national and international scientific conferences, more than 150 publications in academic medical and psychological journals, 50 book chapters, and numerous research grants. He is a co-author After: A Doctor Explores What Near-Death Experiences Reveal about Life and Beyond.Sponsors:Seed's DS-01® Daily Synbiotic broad spectrum 24-strain probiotic + prebiotic: https://Seed.com/Tim (Use code 25TIM for 25% off your first month's supply) Helix Sleep premium mattresses: https://HelixSleep.com/Tim (20% off all mattress orders)Wealthfront high-yield cash account: https://Wealthfront.com/Tim (Start earning 4.50% APY on your short-term cash until you’re ready to invest. And when new clients open an account today, you can get an extra fifty-dollar bonus with a deposit of five hundred dollars or more.) Terms apply. Tim Ferriss receives cash compensation from Wealthfront Brokerage, LLC for advertising and holds a non-controlling equity interest in the corporate parent of Wealthfront Brokerage. See full disclosures here.*For show notes and past guests on The Tim Ferriss Show, please visit tim.blog/podcast.For deals from sponsors of The Tim Ferriss Show, please visit tim.blog/podcast-sponsorsSign up for Tim’s email newsletter (5-Bullet Friday) at tim.blog/friday.For transcripts of episodes, go to tim.blog/transcripts.Discover Tim’s books: tim.blog/books.Follow Tim:Twitter: twitter.com/tferriss Instagram: