[warchild9]

If anyone wants to know what it's like to pursue a PhD, try pursuing a black belt in a traditional martial art like Isshinryu. Or vice versa!
When I finally win mine, I'll have accomplished two of the goals on my life's list. I feel good about that.

[softwarecreator]

pursuing a black belt in a traditional martial art like Isshinryu

Four year program?  Ryuko Kempo is a traditional Okinawan Karate also and you are right, it ain't easy.

[Rammer]

If anyone wants to know what it's like to pursue a PhD, try pursuing a black belt in a traditional martial art like Isshinryu.

HA! Try getting a black belt in Brazilian Jiu Jitsu. 10 to 15 years of consistent training, on average. (I'm just giving you a good natured ribbing - I respect the traditional arts as well. :) )