A new study led by Melissa Napolitano, a clinical psychologist at Temple's Center for Obesity Research and Education, found that text messaging helped overweight college students lose weight. A sample of 52 students was broken into three groups: the first joined a Facebook group and received diet and exercise advice; the second joined the same group but had a more intensive behavioral intervention, including text messages with personalized advice and reminders; and the third group received no extra help. Group two, who received the most advice, lost the most weight — an average of 5.3 pounds.