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Xendurance Extreme Endurance Review

Updated October 2024 with my NCAA banned-substance video · First video May 2019 · 9 videos

My takeBest for Hard-training CrossFit athletes

I've been taking this every day for years, and if you're training hard most days, I think you're at a disadvantage without it. It's not a pre-workout. It's three tablets in the morning and three at night, like a multivitamin. The catch is it won't make soreness disappear. You'll probably still have it, it just won't be as bad.

NCAA Question video
Newest: NCAA Question

Buy it if

  • Buy it if you train hard most days and the second-day soreness is slowing you down.
  • Buy it if you want something you take every day, not another scoop before the gym.
  • Buy it if you'd rather try it yourself than trust a guy picking apart the label online.
  • Buy it if a 60-day money back guarantee makes it an easy test.

Skip it if

  • Skip it if you expect soreness to be gone completely. It gets better, not gone.
  • Skip it if you won't remember six tablets a day, split morning and night.
  • Skip it if you judge a supplement only by how the ingredient list looks on paper.
"If you're not taking this product, you are at a disadvantage. I've been taking it for seven years and I can sing its praises all day."
Me, in my January 2024 overview

Before you buy

What I don't love

You'll still get sore

It takes the edge off the second-day soreness. You're probably still going to have some, it just won't be as bad.

It doesn't look like much on paper

If you read the ingredient list, you might think it can't do anything. That's why there are so many skeptics. You kind of have to try it.

Six tablets a day

Three in the morning, three at night, every day. It only works if you actually take it.

Watch the videos

Every video I've made on it

Newest on top.

NCAA Question video
Oct 2024 · Q&A

Is it safe for NCAA athletes?

Xendurance says its whole product line is Informed Sport certified banned substance free. I explain why I tell athletes to look for the Informed Sport or NSF logo on any supplement they take.

Why I Take It video
Aug 2024 · My Story

I thought it was BS in 2017

How I went from skeptic to taking it every day since 2017, including the time I came off it for about 30 days to see if it was real. I also explain the proprietary blend and the skeptic challenge you can run yourself.

How to Take It video
Mar 2024 · How To

Every 12 hours, and don't chew it

Three tablets about 12 hours apart, every day, training day or not. Swallow them whole, and here's when I'd bump it up to four and four.

Product Overview video
Jan 2024 · Overview

What it is and how to take it

I walk through the Xendurance product page, the studies they cite, and how to take it: three tablets morning and night, like a multivitamin.

Does It Work? video
Dec 2023 · Q&A

Does it really work? Yeah, it does

My answer to the skeptics breaking down the label with bro science. My guess is most of them never tried it.

Competition Pro Tip video
May 2023 · Pro Tip

Four and four before a competition

A short tip: start taking four tablets morning and night a few days before a competition, and keep it up until the day after.

Product Overview video
Jun 2022 · Overview

Where it came from

A product overview from my time as a Xendurance team leader, not a long-term test. I cover the backstory, the 26% lactic acid number Xendurance cites, the rowing test you can run, and the 60-day money back guarantee.

Extreme Endurance vs Essential video
May 2022 · Team Talk

Same product, two bags

A recorded talk for a Xendurance team community. Extreme Endurance and Essential are the exact same product in different packaging, one pitched to athletes and one to everyday people.

Runner Lactic Acid Test video
May 2019 · Guest Test

A chiropractor tested it on 7 sprinters

Dr. Steve Major of Major Chiropractic, not me, walks through a small test with seven quarter-mile runners doing ten 10-second sprints. He reports their peak lactic acid dropped about 29% on average after starting it, and they also used a Marc Pro muscle stimulator during the test.

Questions I get

Does Extreme Endurance really work?

Yeah, it does. I've taken it for years. Xendurance cites clinical studies showing it cut lactic acid by 26% and oxidative stress by 39%, and you can read those studies on their product page.

Is it a pre-workout?

No. It's everyday use. Three tablets in the morning and three in the evening, like a multivitamin.

How fast will I notice it?

Xendurance says within 48 to 72 hours based on their clinical testing.

Will it get rid of soreness?

It won't erase it. You're probably still going to be sore, it just won't be as bad.

What if it doesn't work for me?

Xendurance has a 60-day money back guarantee. If you don't run faster or lift heavier in 60 days, send it back.

Specs

Dose3 tablets morning, 3 tablets evening
TypeDaily tablet, not a pre-workout
Guarantee60-day money back

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