OK, so I've taken 3 practice diags at Princeton Review and I notice a pattern: I keep having to pee! I drink a Sugar Free Red Bull in the morning to wake me up and half way through the physical science I have to go. Then during lunch I have a Diet Coke, so I keep having to go during the second half of the MCAT. We all know that caffeine inhibits ADH, but do y'all know of any stimulants to keep you awake that don't act as diuretics and make you have to pee? The last thing I need is to keep having to go during the real thing and then not be able to concentrate on the test.