Gold medalist Kristin Armstrong, of the United States, kisses her son Lucas, after winning the women's individual time trial cycling event at the 2012 Summer Olympics, Wednesday, Aug. 1, 2012, in London. (AP Photo/Sergey Ponomarev)

Gold medalist Kristin Armstrong, of the United States, kisses her son Lucas, after winning the women's individual time trial cycling event at the 2012 Summer Olympics, Wednesday, Aug. 1, 2012, in London. (AP Photo/Sergey Ponomarev)