The Moro reflex is an involuntary response to threat. If it is retained, some long term effects may be motion sickness, poor balance, poor coordination, visual perceptual problems, or difficulty shutting out background noise. The Moro reflex integration exercise is called the bridge.
Though I'm still not sold on "unintegrated" primitive reflexes in older children, I'm still reading what I can about it. Your Body Works: Central Nervous System - Chiropractic Specialist Brisbane Norman Park