Canelo Alvarez trains hard. How else do you get to 41 wins (30 by KO) and zero losses as a fighter? Now, thanks to the new UA Armour39™, the first-of-its-kind performance monitoring system for athletes, Canelo can track just how hard he's worked at any given time. Armour39™ records heart rate, calories burned, real-time intensity, and WILLpower™. Yes, that's right: WILLpower. Thanks to a unique algorithm, once the Armour39™ module transmits the data it collects via Bluetooth, its accompanying app analyzes it—taking into account heart rate, position, and past performances—to determine your level of effort. The 1-10 rating that is calculated using these biometrics is your WILLpower™ score. Simply put, the Armour39™ tells you exactly how hard you worked. No more guessing.

Now, Canelo can make sure he's always training at his highest level, pushing himself further and further towards true perfection. Opponents, be on notice. His WILLpower™ is off the charts.

The Armour39 hits stores this spring. Check out more information in video above.