So I wondering what this labor is going to be like. I started googling about precipitous labors as my first baby was born in about 3 hours from start to finish. The website said that it may run in families. So I asked my mother yesterday about her labors . Sure as shit she tells me that all her labors were 3 hours or less! I had no idea this could run in families. The website says to ask your sisters as well (if they've already had children) beause this could give you an idea if you're one of the lucky ones who will inherit a quick labor.