More Exam Etiquette

How many times do you need to leave the room during a 3 to 4 hour law school exam? In my Property final the EXTREMELY loud doors must have opened and closed 50 times...not counting when people were exiting after the exam.

Is this the inevitable result of too many redbulls and starbucks?

And if you are going to levae...maybe consider closing the door quietly instead of letting it slam shut. K? Thanks:)