Gulp Gulp Day (Goku Goku no Hi)

What Is Gulp Gulp Day?

May 9th is "Gulp Gulp Day" (Goku Goku no Hi). The name comes from a wordplay on the numbers 5 and 9: "Go" (5) and "Ku" (9) sound like "goku-goku," the Japanese onomatopoeia for the sound of gulping down a drink. It was established in 2005 by Chie Ikeda, who runs a website about pairing food with sake, and is registered with the Japan Anniversary Association. On this day, as the early-summer sunshine turns pleasant, the idea is to enjoy the refreshing feeling of gulping down a beer or other drink -- while also thinking about the water environment so that people in regions with scarce water can drink their fill too.

About the Act of Drinking

Drinking is an essential part of everyday life.

• The role of hydration: The human body constantly needs water, and beverages play a key role in maintaining the body's fluid balance.
• The variety of beverages: Water, tea, fruit juice, and milk-based drinks are just a few of the many types of beverages that exist.

Japan's Drinking Culture

Japan has developed its own unique culture around beverages.

• Tea culture: Japan has a long-standing tea culture centered on green tea.
• Vending machines: Drink vending machines are a common sight on Japanese streets, making a wide variety of drinks easy to buy.
• Seasonal drinks: Beverages with flavors and serving temperatures tailored to the season are another hallmark of Japanese drink culture.

Gulp Gulp Day and the Water Environment

• Supporting clean water: On Gulp Gulp Day, proceeds from drinking parties and other events have been donated to improve water infrastructure in places such as Laos.
• Thirst: Thirst is one of the body's signals that it needs more water.
• Drink little and often: As the weather warms up, sipping regularly before you feel thirsty is considered the basis of good hydration.
• Temperature matters: Cold and hot drinks are perceived differently by the body and are suited to different situations.

Ways to Enjoy Gulp Gulp Day

• Check the ingredients and production methods of the drinks you have every day
• Compare water with other beverages by reading nutrition labels
• Learn about the water situation in regions where safe water is hard to obtain
• Think about how the seasons shape what we drink

A Day to Rethink an Everyday Glass

Gulp Gulp Day on May 9th is a chance to pay attention to the drinks we consume without thinking. Beverages aren't just about hydration—they're deeply tied to culture and daily habits. Taking a moment to consider a single glass of something can be a small but meaningful way to better understand the systems and traditions that shape our everyday lives.