So I just started a new story. Its about 2 siblings who try and survive aftera Zombie apocalypse. Now I started the story with the brother watching over his sister as she sleeps. When I got this idea. If you have seen Lost, you know that for the majority of the series it goes back and forth between the present and the past. Explaining how the characters got to the island and a general idea of what their life was like before. Now I was thinking of adding something like this to my story. I was thinking of every once and awhile going back in time to show how they have changed since the Zombies. I was thinking of putting most of these flashbacks during their escape from the city, but maybe going back further when there was no threat? Would this be a bad thing to add to my story? I know that I would need to find a good transistion. Unlike in Lost, I can't just have a sound play before and after its done.