Stuart McGill's decades of spinal biomechanics research have quantified the compressive forces produced by lumbar flexion under load: it dramatically increases disc nuclear pressure and annular stress, accelerating the disc degeneration that drives the chronic lower back pain affecting 80% of adults at some point in their lives.

Learning and Loading the Hip Hinge

  • Dowel rod drill: place a rod along your spine during bending to give real-time feedback on spinal position
  • Romanian deadlift: the most accessible progressive hip hinge load available
  • Kettlebell swing: the ballistic hip hinge, once mechanics are established
  • Single-leg deadlift: adds proprioceptive challenge and addresses asymmetries
  • Box hinge drill: standing 15 cm from a wall and driving the hips back to tap the wall

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