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.
Former librarian Laura Bush launched "Ready to Read, Ready to Learn" in an effort to prime young children for the world of literature. Laura followed in the footsteps of mother-in-law Barbara Bush, who helped pass the National Literacy Act in 1991.