Spurs center Tim Duncan confirmed Monday that since he had not put off answering e-mails once during the entire year, 2010 would mark the fifth consecutive year he had held true to his New Year's resolution. 'In 2006, I vowed to cut down on the sodium in my diet, and in 2007, I promised myself I would win another NBA championship and finally visit Denmark,' said Duncan, adding that 2009's resolution to 'loosen up and have more fun' was achieved by auditing a sociology course at the University of Texas at San Antonio. '2008 was hard, but on Dec. 31, I finally built up enough courage to talk to [AT&T Center concession-stand worker] Erin [Matthews].' This year, the 12-time All-Star has resolved to start cooking for himself more and to put more thought into the gifts he gives. 