Many non-runners have asked me about the so-called runner's high and what it's all about. They simply cannot understand why runners are so passionate about running, what causes it and why it's not seen in other sports. 

The Runner's World Daily Kick in the Butt that I receive daily in my inbox had the following quote earlier this week from Sasha Azevedo. I think it sums it up very nicely. 

I believe in the runner's high, and I believe that those who are passionate about running are the ones who experience it to the fullest degree possible. To me, the runner's high is a sensational reaction to a great run! It's an exhilarating feeling of satisfaction and achievement. It's like being on top of the world, and truthfully...there's nothing else quite like it!

There really is nothing quite like it! 
For more motivation, check out 101 Kicks in the Butt on the Runner's World international website.