In order to understand this you will have to go back again, apply your mind and just try to recollect that moment when you came to know that 'you are'. This occurred somewhere around the age of three, but before that you were still functioning without any problem from conception to the arrival of 'I am'. What about things prior to conception? Have you ever given any thought to that? You had no requirements whatsoever, even after the arrival of the 'I am' in its nascent nonverbal state there were no problems. During that period of the word-free 'I am' you were not aware of the body at all, that is where you have to come back to and reside.