ARN's original HARNESS formula set a standard in the industry of what a powerful and effective stimulant based pre-workout should be. They used research-backed and reliable ingredients, delicious flavors, and truly created a pre-workout you could count on time and time again.
HARNESS EVOLUTION is the newest innovation coming to you from the Arms Race Nutrition family. They kept the heart of what made their original Harness formula so reliable, but added key elements that have proven themselves in recent years. ARN enhanced dosages of ingredients like beta alanine, citrulline, and L-tyrosine, to improve measures of all around athletic performance. ARN added new ingredients like Nitrosigine®, SantEnergy Nu™, and CognatiQ®, which have been shown to enhance muscle function, fat utilization, and focus. And finally, their classic ingredients like caffeine anhydrous, zümXR™, and ElevATP®, to provide reliable energy output every single time.