Metastatic breast cancer (MBC) can be overwhelming. This cancer is not a specific type of breast cancer, but rather the most advanced stage of breast cancer. In this case, the primary cancer in the breast has spread to other parts of the body - most frequently the bones, lungs, brain, or liver. You will likely have ongoing therapy and close surveillance. Is it beneficial to exercise when living with MBC? If so, how much exercise is helpful, and what types? Read on to learn the dos and don'ts.