The Sprint 8® Protocol is more intense than interval training, but worth the effort, according to its creator Phil Campbell.
In two hospital-based studies specifically on Campbell’s Sprint 8 Protocol, the research shows an average drop in body fat of 27% with no change in diet. Campbell attributes the results to a natural increase in human growth hormone.
“Sprint 8 is a tried and true workout that can rapidly and radically change your body for the better. It’s simple. It’s effective. And you’re going to love what it does to your body.”