When the married parents on The Brady Bunch shared a bed it was scandalous. Now it's hard to get away from just about anyone sharing the sheets on prime time television. The taboos around the horizontal tango have loosened way up. So you'd think that'd mean more people getting busy. The average American adult actually has sex 9 fewer times a year than in the late 1990s. Jared Cotter is talking with professor at San Diego State University, Jean Twenge, to find out why the action has cooled down in the bedroom.