Could running really be my mid life crisis?

I often joke with family and friends that running is just me having my mid life crisis.

For reasons unknown, curiosity got to me today and I Googled the definition of 'mid life crisis'

I had to laugh at some of the urban dictionary definitions.
This was number 3: A mid life crisis is when an old man buys twenty lamborghinis.
Some other funny ones are here:
http://www.urbandictionary.com/define.php?term=mid%20life%20crisis

Google just sums it up as "An emotional crisis of identity and self-confidence that can occur in early middle age."
Faith no more did a song called Mid Life crisis too, but i'll be danged if I can work out what those lyrics mean.

But, it made me wonder if training for half marathons really is a mid life and has anyone else ever asked the question? Another quick trip to Google made me realise that while the terms 'mid life crisis' and 'half marathon' didn't get millions of hits, I certainly wasn't the only one who had thought of this.

What I did get from a few of the articles that I read is that a lot of people say that there actually isn't any scientific evidence behind having an actual mid life crisis and that the term is just bandied about to excuse behaviour that differs from what you are normally doing.

Also, BIG, MASSIVE also, it seems that mid life's generally occur in people aged from 40-60 so I don't fit the age group anyway. (Well, not for another 3 years)

And why does it have to be a 'crisis'? Why can't it be a 'mid-life awesomeness peak'?

After all this research (hic!) I have decided that I am neither at 'mid-life' or having a crisis. What I am doing is living a healthier life and, in doing so, hopefully I inspire my family and others to live healthier lives too.

That said, if I start talking about doing a bungee jump or buying a sports car you are officially given permission to heckle