From the Wall Street Journal summary: A recent study has found evidence suggesting text messages could reduce one’s odds of a second heart attack. A six-month clinical trial in Australia found that patients recovering from a heart attack were more likely to maintain lower blood pressure, less body fat and lower cholesterol levels than a control group when the patients received text messages asking and giving suggestions about their health routines. Patients receiving the texts also were more likely to be active and to quit smoking than the patients in the control group, who didn't receive such texts.