(CNN) Need another reason to get off the couch and get moving while cooped up during the coronavirus epidemic? Here's a killer one: Too much sitting can raise your risk for cancer, according to a new study published Thursday in JAMA Oncology. "This is the first study that definitively shows a strong association between not moving and cancer death," said lead author Dr. Susan Gilchrist, an associate professor of clinical cancer prevention at the MD Anderson Cancer Center at the University of Texas. However, replacing at least 30 minutes of sitting with either light, moderate or vigorous physical activity can lower that risk, she added.