Trying to get pregnant? Taming your stress levels could be the key to a successful outcome. That's because stress hormones can disrupt the subtle hormone fluxes needed for ovulation and fertilization to occur, tripling the risk of infertility, say University of Utah researchers. "And it becomes a vicious cycle, because stress can cause infertility, and infertility causes even more stress!" adds Robert Barbieri, M.D., head of obstetrics and gynecology at Boston's Brigham and Women's Hospital. Fortunately, a recent Harvard study suggests just practicing a stress-busting strategy -- such as yoga --- for at least 20 minutes daily can double a woman's odds of conceiving within two months!