Side Plank

The side plank reach is a kettlebell anti-lateral-flexion core exercise. From a side plank, the bell presses toward the ceiling with the arm locked while the hips stay stacked and lifted. The exercise trains lateral trunk stability under load for twenty seconds per side. Used in the Kettlebell Complex protocol as a force-grinder core finisher across W1, W2, and W3.

Mechanics and load path

Set up on one forearm or hand with the body in a straight line from head to heel, hips lifted and stacked square. The top hand holds the bell and presses it toward the ceiling, arm locked, shoulder packed into the socket. Hold the position twenty seconds, then switch sides. The brace resists lateral flexion: the bottom hip neither sags toward the floor nor pikes upward.

The failure mode is a dropping hip. When the bottom side collapses, the quadratus lumborum and oblique wall stop stabilizing. The lever then shifts onto the spine. A load floor of eight to twelve kilograms keeps the position honest for intermediate athletes.

In the Kettlebell Complex protocol

Side plank reach sits in the force-grinder core finisher (S1, S7, S13), paired with the Pallof Press and the Hollow Body Rock. The three rotate through a forty-second work and twenty-second rest pattern across two rounds. The side plank reach splits its forty seconds into twenty per side. The bell stays at the light tier (twelve kilograms for an intermediate man), the core finisher holding light even on the heavier force-grinder days.

Used in: Program 01 — Kettlebell Complex · Program 03 — Kettlebell Hypertrophy