What's Next? Wax On, Wax Off

Thinking I have identified it.  Karate.  It works... I think.  Meets several needs:

1. getting in shape
2. getting zen
3. meeting people
4. I can daydream about being Jason Bourne and doing Jason Bourne shit ... should I need to
5. it is something I never finished.  While talking to my grandmother... about... what's next... she randomly said "well, you never got your black belt."  It seems that came out of nowhere.  Perhaps from above.  I last took Karate in high school.  How is it possible that I had been pondering it and randomly my grandmother suggests it?

The problem is, I will need to start from scratch.  Fine by me; white belt for now.  Given my current range of motion and balance, it's probably for the best.