Quote:
Originally Posted by Silock
Yeah, it's nothing close to 500%. There's a *slight* increase.
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I also think the original study was in reference to HIIT in general. For some reason, though the Sprint 8 workout really got associated with increases in HGH (I think there was an article in Men's Fitness or something). I know that the first time I became aware of HGH boosting from HIIT was through the an article on Sprint 8.