Hundreds of people go out with their pillows hitting each other’s face， back and chest. People dress up as super heroes and animals， laughing and fighting. Pillows are sometimes hidden and at the exact pre arranged2 time or the sound of a whistle3， the pillow fighters pull out their pillows and start pillow fighting. The pillow fights can last from a few minutes to several hours. There are some rules： Bring your own pillows and don’t hit anyone without a pillow or with a camera.
The festival used to be a game to release4 energy and stress. Nowadays besides bringing fun， International Pillow Fight Day has become a way to quickly collect pillows for the homeless. In 2014， about 2，000 pillows were collected for the poor in Bronx and Brooklyn.