Why do I see stars when I yawn?

Why do I see stars when I yawn? When yawning your wide open jaw squeezes any excess adipose tissue under your chin against your neck, this could compress the blood vessels in your neck reducing the blood flow to your head, producing the “seeing stars” symptom.

When yawning your wide open jaw squeezes any excess adipose tissue under your chin against your neck, this could compress the blood vessels in your neck reducing the blood flow to your head, producing the “seeing stars” symptom.