Weird...

Usually after 15 hours of studying, I am so anxious I need to do some serious deep breathing to calm myself enough to sleep. Perhaps it's because I listened to my own advice... as a "stress buster" at work I suggest to my clients that every 30 minutes to an hour, they stretch a little (this can be done while still sitting at the computer) and take some deep breaths.
It's now 10:30 and I could keep studying. I think it's time to take a break though. I still feel strangely confidant about my A&P exam. 90% is almost looking achievable... Maybe it's the lack of sleep, I don't know. But it's strange.
I haven't studied for my other exams... and that could be cause for worry... but not tonight.