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Exercise physiology matters!! Tough, not tough, whatever you want to argue....if you are going to work athletes extremely hard there is a process that must be undertaken to prepare the body. I know nothing of the strength and conditioning program at the high schools mentioned in this thread, but it's quite obvious that the "punishment" administered was not physiologically sound.
The Oregon situation from several years back that I linked here should be all any coach needs to know that there must be progression to go to "extremes" without detrimental effects.