Bode Miller, arguably Americas best skier of all time and one of the best in the world, has always held uncoventual views. This is a quote from Bode's biography on his training philosophy which reminded me of some of Crossfits methods.
I'm an economical exerciser... My method involves working as hard as you can -- pump iron, ride a unicylce five miles with your cousin on your shoulders, push an abandoned snowmobile up a logging road.... -- until you puke. And puke hard.
This has to be a good gut-wrenching retch so that your eyes guy out... Next, have a nice big drink of water and throw that up too.
Now quit for the day, and go play any combination of soccer, golf, tennis until it gets dark."