Too much diet soda

I'm sitting in a family restaurant with wi-fi to study. The library is closed in observance of Veteran's Day, so I had to find a place with wi-fi that was study friendly. I remembered coming in here once and seeing a bunch of students studying, so I opted to come in here today.

Usually I don't eat while I'm studying. Digestion makes me sleepy, but since I was going to be occupying one of their tables, I thought I should order more than just a coffee--like I have seen so many other students do. On a students budget, I can't really afford to splurge like this (since I plan on staying beyond breakfast and lunch--I know I'll be ordering twice). I've seen the other students milk the heck out of a refillable coffee or beverage. I just feel bad, so I ordered a fruit bowl for breakfast (four bucks for chopped fruit) and a diet soda. For lunch I'm sure I'll have the Cesar's salad (I've already pre-planned my order to keep both meals around 11 dollars). Anyway, I've been sipping on the soda while sifting thru my notes. I guess it's sub-conscious, I don't know, but I have noticed that when I have to read thru a paragraph twice, I pick up the cup and sip.

This has caused me to use the bathroom more than I'm use to. So far--the bathroom visits have numbered 4 (and that's in the last two hours). I've filled my large cup only once. Come to think of it, the guy behind the counter automatically assummed I wanted a large when all I said was I wanted a drink. Which brings me to another point--I've noticed that I always get a large drink in a restaurant with refillable beverages. I don't know why--or why the option is even offerred. It's refillable, why have more than one size?

Anyway, I'm hoping the last visit was it for ahwile. I've tossed my cup so as to not stress-reach for it again. And I've thrown away the uneaten portion of my salad so as to not stress-eat. This is why I like the library--no beverages or food permited on the premises. I don't have to pee or deal with unwanted calories.