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1.
In light of pending rush events, one may experience arousal of the sympathetic nervous system causing increased adrenaline production and one or more of the following symptoms:

-acceleration of heart and lung action
-the "butterflies in stomach" phenomenon
-pupil dilation
-slight nervousness
-increased temperature (hyperthermia)
-stimulation, arousal, hyperactivity
etc.
Sarah: I've been running a high temperature and I can't seem to sit still. These symptoms all started ever since I received that email about Info Sessions this week...
Nick: Dude, you've caught that Rush Fever! Highly contagious. Embrace it, bro.
by AO Rush Chair September 02, 2012