 Intervention: Patients will be offered a personalised program following the guidelines of oncological rehabilitation, which over a period of 12 weeks will facilitate them to stepwise increase the level of PA up to meeting the PA guideline for overweightobese people. To explore physical activity patients will be asked to wear an accelerometer during 1 week before the start of the oncology rehabilitation program baseline. For patients already meeting the guideline at baseline, the program will stimulate them to keep doing so and other aspects of achieving a healthy lifestyle will be discussed together with the physiotherapist. 