This document discusses exercise recommendations and options for cancer patients during bad weather. It provides an overview of the benefits of exercise during and after cancer treatment, including improved sleep, decreased fatigue and treatment side effects, and reduced anxiety and depression. However, certain chemotherapy drugs can make patients sensitive to temperature changes and increase fall risks. As such, the document recommends indoor exercise options when weather is poor, such as using home exercise equipment while watching fitness videos, or exercising at indoor locations like malls, yoga studios and gyms. It emphasizes that staying active is important for cancer patients' emotional and physical well-being.