adrenaline rush

noun2

1. •
   A surge of strength and energy brought on by a dangerous situation, by, or as if by, adrenaline.
2. •
   (figurative) An event or activity which causes such a state.

   • Blackpool continue to thrive on the adrenaline rush of the end-of-season shoot-out and are heading for a second Wembley date in two years after negotiating a nervy path past Birmingham. — 2012