Wait, I just saw this..."the ball"?? You're doling out training advice and you don't know what a kettlebell is, are not familiar with a kettlebell swing, and you don't know what a repetition is? Now that's awesome.The ball that he swings upward and then between his legs. Look at the strain puts on the lower back. especially the jerk stop. . Buy a weight of that size and do three repetitions of twenty and get back to me. Let me know how it feels.
Why doesn't anyone on the boneyard google anything. There are dozens of opinions pro and con on kettlebells. Studies on the possible long term damage to vertebrate have been made. I know that no hoopster ever made a layup by practicing on the kettle ball swing. And I know that three guys who, no doubt, spent time in the training program are out for the season with torn tendon and ligaments. Those are things that I
do know.