Angry White Pyjamas is a book written by Robert Twigger about his time in a one-year intensive program of studying Yoshinkan aikido.

They all decide to enrol at the Yoshinkan Hombu Dojo in order to get fit and break out of their sedentary life-style.

He refers to doing kneeling techniques, or suwari-waza, until his knees bled, only to practice the next day and in so doing tear open the scabs.

Instructors sometimes dish out punishments to trainees if they feel they are not pushing themselves enough, including rounds of push-ups, sit-ups and bunny hops.

In addition, Twigger describes other aspects of Tokyo and his life there, including his relationship with his girlfriend and her family, his work at a Japanese high-school as an English teacher, and stories of living with his two flatmates.