Extreme Endurance is a revolutionary athletic performance formula created by athletes for athletes. This formula claims to reduce lactic acid by 15% and improve the aerobic threshold by double digits.

WHY USE XENDURANCE: As an athlete the harder you exercise and compete, the more acid builds up in your muscles, as your blood and muscle pH goes down into the dreaded acid zone the increased use of muscle glycogen, for energy produces lactic and pyruvic acid. Acidity reduces muscle power and reduces physical and mental endurance. You, your colleagues and your coaches refer to this as lactic acid build-up or lactic acid fatigue.

Your body's acid concentration increases as you produce lactic acid. Lactic acid is split into Lactate (Lactate ions) and Hydrogen ions. H+ (Hydrogen ions) is the acid in Lactic acid. Lactate is good and is an extremely fast fuel that is preferred by the heart and muscles during exercise. Lactate is vital for ensuring that your body gets a steady supply of carbohydrates. H+ (Hydrogen ions), the other half of Lactic Acid is not good, especially when the acid concentration exceeds the body's ability to no longer neutralize or flush the waste from your body.

DIRECTIONS OF USE: Five to seven days before a race increase your dosage to 8 tablets a day; 4 in the morning and 4 in the evening and continue this 8 tablet routine for one day after the race and then drop back down to 6 tablets per day. We suggest this as it helps immensely with recovery.

TESTED: Every single batch of Xendurance is tested for banned substances by the world class sports doping control laboratory, HFL Sport Science. In order to provide re-assurance that the product is suitable for use by elite athletes, the product is approved under the Informed-Sport and Informed-Choice programs.

About the Xendurance brand

Xendurance is a sports nutrition company founded in the U.S. in 2006 when the formula Xendurance was under development. The parent company, Lifespan International US, located in Carefree, Arizona, set out to develop an all-natural, drug-free, product which would improve an athlete's performance by improving both aerobic and lactic acid threshold. Lifespan International recognizes that diet and training is essential to every athlete and active person, and with proven science, sports nutrition can dramatically add to the complete package for optimum performance, no matter the sport. With that in mind, Lifespan International continuously expands the Xendurance product line with products that compliment any training regimen providing proteins, pre and post workout formulas, electrolyte drinks, power-packed multi-vitamins, omega and joint formulas. Xendurance continues to be on the forefront of using this science and success in providing sports nutrition to athletes in every sport and on every level.