WASHINGTON (AP) -- First lady Michelle Obama says her campaign to get young people more into exercise is about the government providing health information, not "telling people what to do."

(Associated Press) -- Women have another reason to exercise: It may help prevent kidney stones. You don't have to break a sweat or be a super athlete, either. Even walking for a couple hours a week can cut the risk of developing this painful and common problem by about one-third, a large study found.