You are lying in bed just about to fall asleep and suddenly you hear glass shattering downstairs. Someone is breaking in!! Your body tenses, your heartbeat increases, your breathing is shallow, your mind is racing and for a second you can’t move. While lying there a thought then crosses your mind, you remember that you left the window open downstairs and it is likely the heavy curtain has blown in and knocked the vase off the table. Immediately your body starts to relax, you