★ The extreme kettlebell workout would have remained the exclusive domain of Russian spec ops, had former Spetsnaz instructor, Pavel Tsatsouline, not immigrated to the U.S. The elite of the U.S. military instantly recognized the power of the Russian kettlebell; ruggedly simple and as deadly effective as an AK-47. Apart from Valley Kettlebells, you can find Pavel’s certified kettlebell instructors in outfits such as the Force Recon Marines, the FBI Hostage Rescue Team, and the Secret Service Counter Assault Team!