watching this..2nd round of a 4rd fight specific circuit training. Sheer brutality..3 ACL surgeries and still training. I guess that proves it can be done if performed properly. Guess it doesn't hurt having an S&C person either.
http://www.youtube.com/watch?v=2RnAI...layer_embedded
http://www.youtube.com/watch?v=l4zca...layer_embedded