Fix the Lean at it’s Source
The runner's lean — that slow forward (and often one-sided) collapse late in a long effort — rarely has a single cause. Each section below targets one contributing factor. Find your weak link and work it.
Core & Trunk Endurance
Prevention Toolkit
McGill’s Big 3
The foundational routine — three drills that build the trunk endurance to keep you stacked and upright when fatigue arrives.
Pallof Press
Anti-rotation strength that keeps your trunk from twisting and collapsing, stride after fatigued stride.
Suitcase Carry
Carrying a load in one hand forces the exact lateral stabilizers that fail when you start leaning to one side.