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 ...

Your Customer Reviews and Feedback Matter

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...

Extreme Endurance: How It Works - Interview With 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...