Mamen Duch is a teacher and founder of Yogi Kids. She became a certified teacher of yoga for children in 2008 at Karma Kids Yoga school in New York, studying with Shari Vilchez-Blatt; and a teacher of yoga for children with special needs studying with Craig Hanauer. She graduated in acting from the Theatre Institute in 1991 and founded the company T de Teatre, and has worked as an actress. She also trains teachers, educators and actors. She is the author of the book Maya y el yoga [Maya and Yoga]. Raúl Nieto Guridi studied painting at the Faculty of Fine Arts in Seville. Since then he has worked in almost every visual field, printing, design and advertising. Since 1995, he has specialised in graphic arts and multimedia. Since 2010, his work has focused on illustrated children's literature and posters for cultural campaigns, as well as book covers for La Joie de Lire.