“Adapt what is useful, reject what is useless, and add what is specifically your own.”- Bruce Lee
I think Bruce Lee would approve of my "Hacking Me" approach.To me, that is really what he is saying here... figure out what works for you.
Bruce didn't just find a great style martial art, master it, and stop there. He looked at other styles and incorporated elements to make a style all his own. His base style Wing Chun was pretty damn kick ass on its own to begin with!
Wing Chun has an interesting story you can go read at that link. Since it was designed for a woman to protect herself against a man, there are no high kicks... the women at the time wore long skirts. So Bruce Lee adapted his famous kicks from another style.
So does this have anything to do with training for triathlon/running/cycling/whatever? Sure it does! You hear a lot of opinions on what the best way to train is... much of it is 'bro science' based on gym heresay. So I say follow Bruce Lee's advice... try it for yourself and then "adapt what is useful, reject what is useless, and add what is specifically your own."