Guillermo Zorrilla Revilla has a University degree in Humanities (Extraordinary Bachelor's Degree Award), skilled in History and Geography (University of Burgos). Also, he coursed university studies in the University College Cork, Ireland. In 2014, he ended a Master degree in Social innovation and Creative and Cultural industries. In 2015, he finished the Human Evolution Master of the Universidad de Burgos. Since 2015, Guillermo has been developing his PhD titled: “Bioenergy of sub-adults of Sierra de Atapuerca Pleistocene” at CENIEH, in Paleophyisiology and Hominid Social Ecology group, inside Palaeobiology reseach program. For his research he uses anthropometry, body composition, indirect calorimetry and accelerometry methods. Currently, he has a contract as Researcher in Training, funded by Junta de Castilla y León and the European Social Fund (ORDEN EDU /602/2016).