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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 ...

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...

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...