Patient Activation Through Counseling, Exercise and Mobilization

Inclusion Criteria, participants must:

* Be diagnosed with locally advanced or metastatic pancreatic cancer, OR locally advanced or metastatic biliary tract cancer, OR locally advanced or metastatic non-small cell lung cancer within 12 weeks.
* Have unresectable cancer.
* Be treated with first-line palliative chemotherapy, immunotherapy or targeted therapy at the Department of Oncology, Herlev and Gentofte Hospital.
* Have an Eastern Cooperative Oncology Group (ECOG) performance status ≤2.
* Have the ability to speak and read Danish, and to provide a signed informed consent form.

Exclusion Criteria, patients with:

* Small-cell lung cancer.
* Any physical condition that hinder the execution of physical exercise training.
* Documented and uncontrolled brain metastases that hinder participation in an exercise-based trial, based on the referring oncologist's assessment.
* Dementia, psychotic disorders, or other cognitive diseases or conditions that hinder participation in a clinical exercise-based trial.
* Unstable medical disease or history of serious or concurrent illness; any Medical condition that might be aggravated by exercise training or that cannot be controlled, including, but not restricted to congestive heart failure (NYHA class II-IV), unstable angina pectoris, implantable cardioverter defibrillator, or myocardial infarction within 6 months, based on the referring oncologist's assessment.

In patients with bone metastases:

\- A bone metastatic burden or location that poses a risk of injury in the performance of exercise training, as assessed by the referring oncologist.