Authors’ contributions
George Raptis , planned and conducted the research including the delivery of the training sessions, run the data analysis and wrote the manuscript. Rebecca Totterdell , contributed to the data analysis, writing parts of the first draft of the manuscript and reviewed several of its drafts. Konstantinos Gerasimidiscontributed to the data interpretation and reviewed several drafts of the manuscript. Louise Jane Michaelis contributed to the planning of the study and reviewed the manuscript. Mercedes Perez-Botella contributed to the planning and the conduction of the study, the data analysis and reviewed and edited the manuscript, ensuring overall cohesiveness.