Linden tea and excercise! Cant emphasize the last one enough- youd be amazed how balanced it can keep you...also if your having like actual *trigger warning panic attacks I wouldn't advice you drink or smoke....yes not even weed
Make sure you wake up early enough to get a full meal for breakfast. Also, leave about 30 mins early due to traffic, events may be going on at your testing center. & just remain calmed and relaxed. Good luck everyone!