The first lady is serious about maintaining a healthy lifestyle. Aside from her Let's Move campaign, which is dedicated to ending childhood obesity, Michelle Obama makes sure she also sticks to her own healthy routine. Why? "Vanity — that's the start. That's just sort of the honest thing. . . . I'm now at that point where if I'm not eating or exercising, I feel badly. So I've gone from vanity to now necessity," she told us during a Let's Move roundtable discussion.