How about stimulate?

**[Stimulate][1]**

>raise levels of physiological or nervous activity in (the body or any biological system).

>encourage development of or increased activity in (a state or process).


**[Catalysis][2]**

Verb: catalyse 
>*Chemistry.* the causing or accelerating of a chemical change by the addition of a catalyst.

Related idiom:

**[Put the pedal to the metal][3]**

>to make something go forward or increase as fast as possible.





  [1]: http://www.oxforddictionaries.com/definition/english/stimulate
  [2]: http://dictionary.reference.com/browse/catalysis
  [3]: http://idioms.thefreedictionary.com/the+pedal+to+the+metal