The Rise of Sourdough By Andrew John Harrison On June 16, 2020 In Health & Vitality Andrew John HarrisonFounder of Goldzone Group and the primary author of Renaissance for Leaders. Harrison’s work focuses on the study of leadership and the conditions that shape human performance and decision-making. andrewjohnharrison.com/ NutritionReal FoodVideo Previous All the World’s a Stage Next Lessons from the Creative Journey