There are powerful altruistic reasons for giving blood; according to the Red Cross, one donation can save three lives. But besides that, science suggests blood donation is as good for you as it is for the community. Regular blood donors have improved blood flow, which may result in fewer arterial blockages – one study showed donors were 88 percent less likely to suffer a heart attack. It triggers red blood cell production, keeping iron levels balanced and potentially warding off anemia and even some cancers. Make an appointment with the Blood Center of Wisconsin and find more specific ways to help – including live organ, tissue and marrow donation, or participating in a new research project gathering data from a million-plus volunteers.