First lady Michelle Obama worked out with trainers from "The Biggest Loser" at the White House as part of her national Let's Move! initiative. Take a look at other Presidential first ladies and the causes they have supported.
Eleanor Roosevelt fought for New Deal proposals, civil rights, and the rights of women. After her husband died, Eleanor was on the board of directors for the National Association for the Advancement of Colored People (NAACP) and was the first chairman of the UN Human Rights Commission.