JoJo is an 18 yr old college freshman who has dropped by the clinic just to ask you about some experiences he's been having since coming to college. He never used to drink alcohol or coffee before living on campus, but now he drinks beer on the weekends and coffee several times a day. What he's noticed is how much more frequently he has to urinate. He's wondering what's going on and if he should be concerned that he has some weird illness.