In a recent study, researchers had people track their workouts using "social gaming," where you earn prizes for working out. Not surprisingly, after 10 weeks, the people who played the games exercised more often, AND lost more weight.
Bad news, my cheap, selfish friends. This year when you walk past the Salvation Army bell ringer, and tell him you're SO sorry but you don't have any cash or change...even though you totally do... it won't work.
Because this year, Salvation Army bell ringers will be swiping credit cards on their PHONES in some cities.