Hi, I work nights 12hrs.....& without exagerating.....each night I feel like I am going to die....ie...my belly aches, I feel dizzy..even nausea @ times. Even though we are allowed 'nap time' I can rarely 'nap'. Coffee has been helpful, however 5 shots of espresso really can 'screw' one up. Does anyone have any helpful hints..I would really appreciate it. Thanx.