Secret Service agent watches as First lady Michelle Obama speaks about the government and community efforts to fight childhood obesity while visiting the YMCA January 28, 2010 in Alexandria, Virginia. (Photo by Chip Somodevilla/Getty Images)

ALEXANDRIA, VA – JANUARY 28: A U.S. Secret Service agent watches as First lady Michelle Obama speaks about the government and community efforts to fight childhood obesity while visiting the YMCA January 28, 2010 in Alexandria, Virginia. The U.S. Surgeon General Regina Benjamin released a paper on the public health challenge posed by the rise in obesity, particularly among children, and the importance of involving parents, health care providers, schools, and local communities in finding comprehensive solutions. (Photo by Chip Somodevilla/Getty Images)