matt carpenter gets the game winner. cards win 3-1 and take a two games to one lead in the series. >> can you catch game four of the national league championship series tonight right here on fox 5. adam wainwright goes for the cardinals and tim linscum takes the mound for the yankees. >>> runny weather in detroit postponed game four. it will be played today. detroit leads three games to none. >>> we have heard the saying, too much of a good thing. >> does that hold true for exercise? some experts are now saying yes. fox's medical team's dr. manny alalvarez explains. >> it is almost like the alcoholic has to know where they're going to get the next drink. hi to know where the gym was. >> reporter: although doctors well at least 30 minutes of exercise each day. >> someone has a problem where either a substance or a process or action or thought dictates a cycle that releases dopamine or the pleasure centers of the brain and that same substance or that same process has to occur over and over and over again to satisfy that dr