GU Nutrition Matrix is a holistic nutritional system designed to help you hydrate, energize, and recover when pushing yourself and your body to the limits. Gu has what your body needs to go longer and farther. And then get back out there to break on through again tomorrow.

Our Story


  • Finding out that GU includes only those beneficial amino acids in their endurance products, but not all of the other useless ones in a complete protein made me realize that the science behind their passion was real. I will also admit that when I tasted Chocolate Smoothie Recovery drink, that sealed the deal.

    rebecca-rusch-1 ~ Mountain Bike Champion Rebecca Rusch

  • My first bonk was during the Double Dipsea in 2009, on the return back to Stinson. The next year, I dropped 2 GU’s at the turnaround, ate them, and never felt a dip in my energy levels. After the race, I knew I’d found something that worked for me and haven’t used anything else since.

    alex-varner ~ Ultrarunner Alex Varner

  • GU played an important role during one of my proudest accomplishments early in my ultra-running career, my Grand Canyon Rim-Rim-Rim Fastest Known Time. After that there was never any doubt GU Energy would take care of me on any adventure I tackled.” “Chocolate Smoothie Recovery Drink Mix is my go-to after a hard effort or long run. Almost always used in a Vitamix concoction with soy milk, yogurt, banana, nuts and cinnamon.

    rob-krar-profile ~ Ultrarunner Rob Krar

  • In 2000, two other climbers and I completed the Slovak Direct route on Mount McKinley (Denali) in 60 hours. The fastest ascent before that had been 7 days. We relied almost entirely on GU Energy Gel, literally climbing from one Gel, feeling that we were getting close to the bonk, then doing another Gel. It got us up 70% faster than anyone before us. That record still stands 14 years later and I’ve been using GU Energy products religiously ever since. I use them training and on my big climbs. When people ask me how I do those big climbs so quickly, I always tell them that nutrition planning is big part. Thanks GU!

    steve-house-portrait ~ Alpine Climber Steve House

Whatever your athletic goal we can help you go for it! And, whatever your sport nutrition need, there’s a GU for it!


Recent News

Trash on Death Ride

Breaking a Trash Tradition

Post by Yuri Hauswald, GU Energy Lab’s Community Development Manager. Nobody likes seeing the trails they run on, or the roads they ride, cluttered with sports nutrition waste. Whether it’s ours, or other brand’s, we take litter seriously here at GU Energy Labs, especially when it involves events that we support.  That’s why, for the past […]

Read More

Race Day Nutrition Planning for The SF Marathon

GU Energy Labs is proud to be the official Energy Chew of The San Francisco Marathon! Our Energy Chews will be provided on course to help power you up the hills and to the finish line!  (Look for them at aid station #3 at Vista Point and aid station #10 on Haight Street.) Learn more about The San […]

Read More

Lab Notes: Electrolyte Replacement for Athletes

Click here for Hydration Tips and Recommendations Electrolytes are minerals in your body and blood that affect how your body functions, particularly during exercise.  When you sweat, you lose electrolytes. And, as anyone who’s ever tasted their own sweat during a hard workout knows, sweat is salty. That’s because the primary electrolyte you lose when you […]

Read More
GU Hydration

Hydration Tips & Recommendations

BEFORE Exercise: Beginning practice or competition with an adequate hydration level is as important as maintaining hydration during exercise. When an athlete begins to exercise in dehydrated states, many physiological mechanisms are compromised such as increased heart rate and increased perceived effort. To ensure proper pre-exercise hydration, the athlete should consume approximately 500 to 600 […]

Read More