Clinically Proven. For over a decade, 12 clinical studies have proven the benefits of Extreme Endurance. Two of those studies are Gold Standard, double blind, placebo controlled, published studies. The results of those studies show a reduction of soreness, improvement in stamina and an accelerated recovery. In a 10-day clinical study, Extreme Endurance had an astounding 39% reduction in oxidative stress, which helps promote anti-aging benefits and cellular health. Numerous sources believe oxidative stress is the leading cause of many of our degenerative diseases. World class athletes have trusted Extreme Endurance since 2008 for performance benefits and the ongoing science has shown overall health advantages for everyone concerned about balancing their body’s pH and supporting cellular function to fight free radical damage* Clinical Studies: Extreme Endurance & CK Levels Extreme Endurance Clinical Test 2010 Athletic Performance Clinical Study Extreme Endurance Fran Test 2016 Journal of Athletic Enhancement Clinical Study