Step by Step Back - A Feasibility Study of a Physical Activity Intervention for Adults With Stress-related Exhaustion

The goal of this clinical study is to learn whether a psychologist- or psychotherapist-guided physical activity program can be delivered and used as part of regular care for adults experiencing stress-related exhaustion. The program is designed to be integrated into regular psychological treatment as usual and supports participants in developing physical activity habits in a gradual, individualized, and sustainable way. The main questions this study aims to answer are: * Can participants complete the program and attend the planned sessions? * Do participants and clinicians find the program acceptable, relevant, and useful? * Is the program safe, and do any negative experiences occur during the program? * What practical barriers and facilitators affect participation and delivery in routine care? * What descriptive patterns of change are seen in physical activity, symptoms, and everyday functioning from before to after the program? The program is based on cognitive behavioral therapy (CBT) and acceptance and commitment therapy (ACT). It includes strategies to help participants set meaningful goals, take step-by-step actions toward those goals, and respond more flexibly to uncomfortable thoughts, emotions, and body sensations that may arise in relation to physical activity. About 12 to 20 participants will take part. The program is designed to be integrated into about 5 to 6 individual sessions delivered over a flexible time period, depending on each participant's pace and circumstances. Participants will: * Take part in the physical activity program as part of their regular psychological treatment * Complete online questionnaires before and after the program * Log their physical activity during the program * Provide feedback after the program (and some participants will also take part in an interview) The results will be used to assess whether the program is feasible and acceptable for participants and clinicians and to inform further refinement and future eval