Study design of the ReSource Project. (A) central processes and core exercises trained during the three modules Presence (yellow), Affect (red), and Perspective (green). (B) timeline of the ReSource Project and training sequences per cohort. Colored areas represent training periods and grey areas data collection. The study timeline was adapted to most accurately reflect blood sampling; test phases for other variables may differ slightly. For logistic reasons retest control participants were recruited in two cohorts, but are analyzed jointly. The full ReSource design as shown in the Figure contained follow up assessments (T4); however, these are not included in the present investigation. Figures were adapted with permission from Singer et al. (2016).