Yin emphasizes that these strokes don't just happen to anyone: watching a 3D film and vigorously striking the neck are what trigger the stroke, but the underlying problem is that the victim's arteries have already hardened.
但尹居浩強調，中風不會無端襲擊任何人，看 3D 電影和劇烈甩動頸部只是臨門一腳的「機率」問題，癥結是病患的血管早已硬化，外力才會成了壓垮血管的最後一根稻草。