Neck hyperextends
Head cranks back; suboccipitals and cervical extensors compress.
Overactive muscles
SuboccipitalsSCM
Corrective work
Foam RollSuboccipitals (lacrosse ball)↗StretchSCM / scalene stretch↗Head cranks back; suboccipitals and cervical extensors compress.
Glutes and hamstrings insufficiently strong or activated.