The Lancet Oncology Editorial1 about our exercise in cancer care position statement2 was welcomed by the Clinical Oncology Society of Australia (COSA). The position statement represents COSA's first step in instigating change in cancer care in Australia, acknowledging that although there is still more to be learned, the extant evidence supports moving forward with incorporating exercise into routine cancer care.3, 4, 5, 6 Cumulative findings from physical activity and exercise trials support the promotion of physical activity and use of exercise science principles to gain and maintain physiological, functional, and quality-of-life benefits during and after treatment for cancer.3, 4, 5, 6 This evidence provides sound justification for including exercise as part of routine cancer care, independently of any potential protective effects against survival outcomes that are still to be determined.