great training for side strikes, uppercuts, and half-uppercuts

Excellent training for side strikes, uppercuts, and half-uppercuts. It's important to try to drive the impulse from the legs and engage the arm muscles only partially — in this case they perform a corrective, secondary function and guide the kettlebell not somewhere into outer space, but where you need it. The same goes for strikes later — they'll become more natural, the body will engage correctly, at some point it all gets wired into muscle memory, and the movements will happen on autopilot — at the level of instinct.

Arthur O'Harra.