FITNESS

How to Improve Athletic Performance with Sports Nutrition

Improving an athlete's peak performance requires extreme conditioning with a great amount stress to the athlete's body. In these instances, proper sports nutrition is absolutely critical for these ...

THANKS for Your Great Reviews of Xendurance!

Our first responsibility and passion is to the athlete, to you. We founded Xendurance on the idea that we can use high quality ingredients with clinically proven product formulas to help you reach ...

Zach Bitter Breaks His Own American Record - 100-Mile Run in 11:40:55

On December 29, 2015, Zach Bitter returned to the Desert Solstice Invitational Track Meet in Phoenix, AZ to break his own 100-mile American Open Track Record in 11:40:55. For those tabulators at ho...

How Does Extreme Endurance Work? Interview With Xendurance Owner: Sandy Kellin

Sandy Kellin, owner of Xendurance explains Extreme Endurance You hear about lactic acid. Lactic Acid is one part lactate and another part acid. Within the two, we have this hydrogen ion that is an ...

Best Kept Secret in Sports Science: How to Lower Creatine Kinase (CK Levels) and Dramatically Improve Athletic Performance

Regardless of your sport or method of training, studies prove that by using Extreme Endurance, you will dramatically decrease muscle damage and trauma, along with decreased muscle soreness and...

Extreme Endurance Effects on Creatine Kinase (CK) Levels in Cross Functional Athletes, Military Warfighters and Firefighters

Rhabdomyolosis (Rhabdo) is an increasingly, alarming topic among the cross functional community, the military war fighters and firefighters. While this topic is not new to the military war fighters...