A person can stay awake for up to 2 weeks before getting very sick and possibly dying.
However after 24 to 48 hours of no sleep a person can begin to hallucinate and have slower reaction times as well as confusion and make mistakes.
Not getting the required sleep can cause health problems such as stroke, heart disease, brain cells dying and even kidney failure can be caused by lack of sleep.
If you're unable to get to sleep you may need to resort to sleeping pills because although sleeping pills are not good to take on a nightly basis to get to sleep so is not getting enough sleep.