It seems highly likely that you will fall asleep at some point during 7 days.It doesn't seem likely that a body can remain 7 days without sleeping. A prolonged awakened condition can cause progressive dysfunction of the brain accompanied by abnormal behavior. Thoughts can become slow and a person becomes more excitable or psychotic (hallucinations). Sleeping maintains the balance among the nerve centers in the brain so it is very important to sleep enough... and properly. The duration a person can go without sleeping and the symptoms manifested during deprivation will depend upon his/her individual characteristics.