Opinions on this video:

http://www.youtube.com/watch?v=d1Z5WwBoxOk

While I am all about resistant training, I really wonder if NHB training is appropriate for kids under, say 12 years old or so. It doesn't look like face strikes are allowed (as far as I can tell), but the submissions are a bit dicey for me.
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"In case you ever wondered what it's like to be knocked out, it's like waking up from a nightmare only to discover it wasn't a dream." -Forrest Griffin