A member asked:

My veins show on my forehead when i laugh why is that?

A doctor has provided 1 answer

Increased pressure: The short answer is that laughing is like a valsalva maneuver, where you hold your breath and push. The pressure around your heart and lungs goes up pushing blood away from that area - out into your legs, arms and head. Yor veins are the place this is most notable.

Answered 10/31/2017

4.6k views

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