Question 329228
You would have to generate a hypothesis using some study that you propose. 
As an example, patients who have less than 4 hours of sleep per night performed significantly worse on the 10 question quiz and obstacle course than those that had more than 4 hours of sleep per night. 
In other words, define what you mean by sleep deprivation and then describe how you'll measure what "negative physical and mental affects on the body"