It is a method to take a rest in order to cure the Zen disease caused by nervous breakdown, and it consists of 24 hours sleeping, image training of the Zen sect, susokukan (method to achieve spiritual concentration and stability by counting the number of breaths) and tanden kokyu (respiration by working the inner part of the lower abdomen just beneath the navel).
神経衰弱から来る禅病を直すための心身の休養方法であり、心身がもとより空虚なものであることを体験するために、24時間の睡眠と禅宗的なイメージトレーニングと数息観と丹田呼吸を行う。