Conducted a conditioning seminar for U-15 J-League select players as part of activities related to the J-League Future Development Partner Agreement.

On Monday, July 28, 2025, TENTIAL Inc. conducted a conditioning seminar for U-15 J-League select players as part of activities related to the J-League Future Development Partner Agreement.

On the day, the seminar was conducted by Ryusuke Sakai, a former J-League player and current employee of our company, with the aim of "understanding the importance of sleep and realizing the necessity of securing sleep time." Players visualized their own sleep time, and Sakai provided information on the impact of good and bad sleep on the mind and body and performance changes, incorporating his experiences from his active days.

Participants expressed, "I knew the words about sleep and conditioning, but it was great to learn in depth," and "I was getting sleep, but I found many areas to improve in my pre-sleep actions, so I want to incorporate them to make it better."

The day's events are also featured in the following media.

U-15 J-League select players attend a sleep conditioning seminar!! Former J-League player Ryusuke Sakai, the lecturer, shares, "In a match where I couldn't fall asleep, I scored an own goal..."

"8-10 hours of sleep" is crucial. Former J-League player guides U-15 J-League select players

Towards the "future Japanese national soccer team," former J-League player conducts a sleep seminar, sharing a terrifying experience of "scoring an own goal in a match where I couldn't fall asleep."

Our company will continue to support player conditioning in various forms, including conditioning seminars, as a J-League Future Development Partner.