Gretchen Reynolds of The New York Times covers a recent study in which researchers observed male colon cancer survivors and their blood cytokine levels during a month of high-intensity interval exercise. Reynolds writes: “In effect, something about the blood drawn immediately after the workout was slowing the growth of cancer cells. The researchers think they may have identified that something in subsequent analyses of the men’s blood. They found a large increase in molecules involved in inflammation immediately after exercise. Inflammation can slow cell growth and reproduction. So a transitory increase in inflammatory markers after exercise might be helping to jam the proliferation of tumor cells.”