Gus Castellanos, M.D. is a graduate of the University of Miami Miller School of Medicine. He practiced Neurology and Sleep Medicine in Jupiter for 25 years. He has been practicing mindfulness since 1998 and teaching and researching mindfulness-based programs since 2009. He is certified to teach Mindfulness-Based Stress Reduction (MBSR) by the University of Massachusetts Center For Mindfulness & trained with and participated in mindfulness research at the University of Miami’s Neuroscience of Mindfulness Lab. He has facilitated hundreds of mindfulness programs to thousands of participants throughout South Florida and now teaches mindfulness virtually via zoom and in-person. He is an adjunct instructor at Nova Southeastern University where he developed, delivered, and researched a mindfulness-based program for their students, staff, and faculty. Gus facilitates a twice-monthly mindfulness session at a local prison since 2011, lectures widely, and writes a twice-monthly Mindfulness newsletter. He serves on Palm Health Foundation’s Better Brain Health Advisory Board. On a personal level, Gus is in recovery 18 years for substance use disorder, has been married to Bessy for over 40 years, has a son and daughter who are doing well.