Butterflies

As I finalized my packing for this weekend's Tinkerbell Half Marathon the butterflies began to settle into my stomach. I am more than excited that this weekends has finally come I have been waiting for this day for a long time. I can't explain the nerves as this is not my first rodeo so to speak. I know what to expect, I know that I am capable of such a feat, so I ask why the butterflies?