From the CrossFit website we learn that “CrossFit is the principal strength and conditioning program for many police academies and tactical operations teams, military special operations units, champion martial artists, and hundreds of other elite and professional athletes worldwide.”
They have a lot of videos on youtube if you would like to see what it is all about. ‘DL, J RingDip, RopeClimb‘ is one that tells the story. It is a little messy but it is a great example of determination and how the body responds to high levels of lactate.
Throwing-up is a natural response by the body to high levels of lactate and high levels of lactate is the natural response to intense exercise without sufficient oxygen. Lactate inducing workouts are fantastic for fat burning because of the massive amount of EPOC (excessive post-exercise oxygen consumption) they create.
I believe that this type of training is going to become very popular because it is effective at leaning a person out, building relative strength and developing mental toughness. It teaches a person how to ride the line between too much exercise and just enough exercise and this will allow them to get the most out of their time at the gym.
I don’t see many people working out like this at commercial gyms but did get people to the threshold a few times when I was a trainer at one – my boss didn’t like it very much because it was “bad for business.” I don’t know what he was talking about because my clients got results and renewed with me; but it could have had something to do with the fear instilled in the new members who see them holding buckets to their faces.