 After the first evaluation, the volunteers will be randomized for the two groups. The groups will be equated with control of age and gender. As soon as they form subgroups of approximately 15 volunteers the interventions will begin. Recruitment and screening of participants will continuate and the new groups will begin as new subgroups of approximately 15 participants are formed. The protocol of Mindfulness will be offered to the control group after the end of the study. 