At 40, Jennifer Lopez isn't slowing down. If anything, she's embracing life and not letting anyone hold her back. "What, because I have kids and a husband now I'm not supposed to be me? I'm a more heightened me if anything. Hyper J.Lo. Everything I wanted before, I want twice as much now," Lopez reveals in the February issue of ELLE. After the jump, Lopez gets candid about motherhood, in vitro fertilization and what it's like competing with twenty-something pop idols as a 40-year-old mom.