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Key Ingredients


ZumXR™ (XR Caffeine)



Best Used For:

  • SUPERCHARGE YOUR WORKOUTS. HARNESS contains key ingredients demonstrated to increase measures of athletic performance.
  • FOCUS and ENERGY. HARNESS’ energy matrix emphasizes clean, sustainable, and beneficial energy over pure stimulation. Our specific combination of two forms of caffeine anhydrous results in less of the dreaded “crash.”
  • GREAT FOR EVERYONE. HARNESS has been formulated to address a wide range of athletic needs. HARNESS is perfect whether you’re an aspiring marathoner, a crossfitter, or someone just trying to get in shape.
  • DELICIOUS TASTE. In seven innovative and delicious flavors, you’ll never dread drinking your pre-workout again. No chalky texture or bitter after taste.
  • 5-STAR REVIEWS with MONEYBACK GUARANTEE. HARNESS’ average rating is 4.9 with hundreds of reviews. Our quality is backed up by a 100% moneyback guarantee.

Full Science

You’re watching the clock, waiting for it to strike 12 noon. What is the significance of 12 noon? Well for some this is break time, lunch time, the time to take it easy for a little bit. Not for you though! For you, this is the time to put in work, get sweaty, lay those bricks that will build the wall of gains! Everyone has their tools to success. A pep talk, the lucky underwear, you name it. For you though its none of those things. You need an elixir that will surely give you the kick in the pants to do not 1 more rep, but 5 more reps. Not 1 more lap but 10 more laps. What is this is elixir I’m referring to? Well, its ARN HARNESS of course! 

What is HARNESS? HARNESS is a precise mixture of key ingredients that enhance athletic performance and bring your workouts to the next level. For athletic performance, caffeine anhydrous, Zum- XR™, l-citrulline, beta alanine, ElevATP™, and L-Tyrosine are included at, or above, serving sizes suggested by the research. Together, these ingredients have been repeatedly demonstrated to increase maximum voluntary contractile force and other measures of power output, increase maximal oxygen uptake capacity, and significantly enhance time measures in standard athletic trials. For mental capacity, clarity, and focus, citicoline and Huperizine A are also included at, or above, serving sizes suggested by the research. Studies using these ingredients have shown them to increase working memory, reduce cognitive inhibition, and reduce neurological processes typically associated with cognitive decline.

With this blend of ingredients working synergistically together, our performance and focus blend is all you need to take the reins and HARNESS everything you need to take your workouts to the next level. Are you ready? 

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Julian Smith

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