Man, I love me some Kettlebell training! It’s a fun, safe and versatile training method most athletes can use to improve thier strength, power, power-endurnace and/or work capacity. Of course, which of the above qualities you improve upon is dependent on the load, sets, reps, rest intervals etc: you use. . That said, regardless of how you’re training with the KettleBell. The one weakness to kettlebell exercises we’ve found, is the general lack of of pure transverse plane rotation. . Yes, there can be and element of rotation when you only use one arm to perform your kettlebell exercises. But, that’s only a minor amount of rotation compared to what’s needed to perform optimally in sports like golf, baseball, boxing, etc: . So, in true Performance U fashion, we’ve developed a way to use the unique properties of the kettlebell to enhance rotary strength and core power. .