5 bad gold swing positions that can cause lower back pain:
1) S-Posture: Sticking out your butt to swing by arching your lower back (excessive hyperlodosis)
2) Reverse Spine Angle: Spine tilts toward the target at the top of the backswing and you use the back muscles to go into extension of the backswing - excessive stress/compression/load on the lumbar spine on the downswing/through
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