Nike’s Slogan is, In My Opinion, Too Verbose to Serve as a Personal Anti-Procrastination Motivational Message and I Have Shortened It But Did Not Go Bare-Bone Minimalist Because I Feel That A Single Word Imperative Would Not Convey The Need To Stop Finding Excuses and Reasons to Not Act.
Yahooey's Blog 
Hey Hey now, Nike had to pay one of their child workers three cents and hour to come up with the third word in their motto.
That’s more than a penny per thought.