How Fast Is Laughter Exhalation?

Laughter pushes air through the throat at about 8 m/s — similar to a forced cough but in the rhythmic 'ha-ha-ha' bursts that make laughter recognisable across cultures. Many researchers believe it derives from primate panting behaviour, repurposed for social bonding.

Laughter is believed to derive from primate panting behaviour — repurposed as a social bonding signal that everyone recognises.

• Same as a hairdryer on low
• Faster than a brisk walk