Weight on the neck instead of shoulder blades
The inversion must be held on the upper back; neck weight is dangerous.
Overactive muscles
SCMSuboccipitals
Corrective work
Foam RollSuboccipitals (lacrosse ball)↗StretchSCM / scalene stretch↗The inversion must be held on the upper back; neck weight is dangerous.
Keep the lowering leg at a comfortable range; hamstring flexibility develops over time.