EXERCISE: Physical Inactivity After Cardiac Surgery Linked With Substantially Higher Risk of Depression. “New research indicates that inactive patients following cardiac surgery have a substantially higher risk of depression and that the number of patients suffering from depression after cardiac surgery is as high as 40%. Investigators recommend that cardiac patients should be assessed for depression and level of physical activity and remain as active as they safely can after surgery to minimize post-operative depression. The results are published in the December issue of the Canadian Journal of Cardiology.” That makes sense to me.