Xendurance

5 Reasons Why You Won't Tell Anyone About This Performance Enhancing Product

#1 Improve Workout or Race Time

Would you tell your training partner why you started beating them in workouts?

Why tell them you are on a clinically proven, certified drug free performance product that has over a dozen open label and published clinicals showing a double digit increase…when you out rep them?

#2 Increase VO2 Max 

If you have a hard time catching your breath and you found something that makes you feel like you have a third lung... why would you share your advantage?

#3  Maintain Energy Levels

Feel worn out before, during, AND after workouts? Energy drinks not cutting it? BUT all of your friends seem like they aren't?

If all of a sudden you looked forward to the next workout and felt significantly better during it... would you tell your friends?


#4 Improve Recovery Time

If a product was clinically proven to reduce Creatine Kinase (CK) levels by 6x which means your muscles recover better during workouts and after... would you keep that to yourself and let your friends suffer?

#5  Less Muscle Soreness

If a product was clinically proven to reduce lactic acid buildup by double digits meaning you wouldn't be as sore the next day... wouldn't you keep that to yourself and let all of your friends be sore and miserable?


As seen on

GOODBYE SORENESS. HELLO PERFORMANCE.

4.9/5.0 (1,000+ Reviews)

BUY NOW

1

26% Reduction of Lactic Acid = Less Muscle Soreness

2

39% Reduction of Oxidative Stress = Improves Performance

3

6x Reduction of Creatine Kinase (CK) = Muscle Recovery

4

Increase in Aerobic Threshold = Better Vo2 Max

5

Benefits within 72 hours

6

Certified by Informed-Sport

PROVEN IN 12 CLINICAL STUDIES

Journal of Athletic Achievement (2016)

ENA Conference, Vienna Austria (2010)

VS BETA ALANINE

JOIN 300,000 CUSTOMERS OVER 10+ YEARS

  • Abdiel Crespo 

    5/5

    If you are looking to recover faster and feel stronger and with a better engine you must have Extreme Endurance on your side. It is the only supplement that you should not stop taking.

  • Veronika D’Alfio

    5/5

    Perfect product. Been taking it for a week and already fed the difference. I bought a few products and will be getting more, also signing up for a membership soon. Thanks

  • Natalie Collar

    5/5

    I started using Extreme Endurance in October 2020 after I noticed a difference in one of my teammates at a fitness competition. I won’t be without it now. I have noticed a significant improvement in my endurance and breathing not only during workouts but just in my daily living. And I’m 60 years young!!!

  • Shawna Norton

    4.5/5

    I LOVE this product. As a competitive CrossFitter looking to get to the next level, I need to be doing everything within my power to support my training. I feel like Extreme Endurance allows me to keep pushing and to continue to test my limits!

TRUSTED BY WORLD CLASS ATHLETES

Craig Engels

1500m USA TRACK TEAM

Donavan Brazier

800M AMERICAN RECORD HOLDER

Josh Bridges

FORMER NAVY SEAL & CROSSFIT GAMES ATHLETE

Danielle Brandon

5x CROSSFIT GAMES ATHLETE

FIRST ORDER ONLY

Any athlete or weekend warrior like you works out to push the limits and reach new heights. We’ve developed a super-supplement to help power your along the way, allowing you to train longer and harder with less damage and strain. 

Best Value

60 Day Supply

$181.93

$259.85

$78 in Savings + $100 Product Rewards

Take Advantage of The Savings:

25% OFF Extreme Endurance

FREE Omega+D3

Team XND Membership

FREE 2x $50 Rewards

FREE SHIPPING

Most Popular

60 Day Supply

$115.90

$179.85

$39 in Savings + $25 Product Rewards

Improve Your Fitness:

FREE Omega+D3

FREE $25 Gift Card

FAST SHIPPING

Single Purchase

$52.16

$67.95

$10 Product Rewards

Try out Extreme Endurance:

FREE $10 Gift Card

FAST SHIPPING

Recover Faster, Live Better

  • Fights free radical damage & supports crucial cellular functions

  • Promotes anti-aging by reducing damaging oxidative stress

  • Increases aerobic threshold and VO2 max for a longer, healthier life

  • Starts working within 48–72 hours

100% Guaranteed & Backed by the Xendurance Promise

  • Scientific Efficacy: Proven by rigorous scientific research and tested by unbiased 3rd parties.

  • State-of-the-Art Manufacturing: We only partner with Good Manufacturing Practice (GMP) certified and/or equivalent facilities.

  • Accessibility for All: We strive to make our product line available to athletes of all abilities!

  • Certified Drug Free By Informed Sport: 3rd party tested to guarantee free of banned substances