Defense mechanisms is the way in which unconscious mind protect, deny and manipulate in other to defend against feelings of anxiety or guilty thereby maintaining one's self from things that they don't want to think about or deal with.
Example is been faced with an unpleasant task or assignment, your mind may choose to forget your responsibility in order to avoid the task.
20-40 mins depending on the person....but would not try it but...if you have to...slightly bend your knees to help your blood circulate..that would prevent you from passing out..
