# Koala JP sleep competition in Tokyo

> Live situation record from CLSTR: https://clstr.news/situations/koala-jp-sleep-competition-in-tokyo
> Updated: 2026-09-21T02:50:37.000Z. Sources: 10. Developments: 3.

Koala JP has announced a sleep competition titled ‘Mattrace by Koala,’ scheduled for October 5, 2026, in Minami Aoyama, Tokyo. The event aims to identify the individual with the highest sleep quality during a controlled 90-minute session on Koala mattresses.

Sixty participants will be monitored using devices to track metrics such as sleep depth, stability, and the time required to fall asleep. To ensure fairness, contestants must be at least 20 years old and are prohibited from using sleep medications or intentional sleep deprivation. The competition may include unexpected disturbances to test sleep resilience, and scoring is being developed under medical supervision.

The grand prize for the highest scorer is 2.22 million yen, valued at approximately $15,000 or 12,500 euros. Additional awards may be presented for categories such as the deepest sleep and the most unusual sleeping positions. The event also features preparatory ‘sleep gymnastics’ and may involve random sleep aids to test adaptability. Beyond the marketing aspect, organizers intend to use the competition to raise awareness regarding chronic sleep deprivation in Japan, which is often driven by stress and long working hours.

## Timeline

### 2026-09-21: Japan to host sleep competition with 12,500 euro prize

A Japanese branch of Koala is hosting a sleep competition in Tokyo, where the winner can receive a prize of approximately 12,500 euros for achieving the highest quality sleep.

2 sources. https://clstr.news/cluster/japan-to-host-sleep-competition-with-12500-euro-prize

### 2026-09-18: Koala JP to host sleep competition in Tokyo with $15,000 prize

Koala JP will host a sleep competition in Tokyo on October 5, 2026, offering a 2.22 million yen prize for the participant who achieves the highest scientifically measured sleep quality.

4 sources. https://clstr.news/cluster/koala-jp-to-host-sleep-competition-in-tokyo-with-15000-prize

### 2026-09-10: Tokyo to host sleep tournament with $12,800 prize

Koala Japan will host a sleep tournament in Tokyo on October 5, 2026, offering a prize of 2.22 million yen for the highest quality 90-minute nap, measured by medical-grade sleep monitoring.

4 sources. https://clstr.news/cluster/tokyo-to-host-sleep-tournament-with-12800-prize

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Cite as: Koala JP sleep competition in Tokyo. CLSTR, https://clstr.news/situations/koala-jp-sleep-competition-in-tokyo