Bruce Tegner was a famous judo champion. Literally born into the martial arts he taught for many years including the U.S. armed forces. He also work in Hollywood as a movie fight choreographer. Many marital artists didn€t like him because of his message of stripping away what was traditional yet impractical.
In this book Bruce Tegner shows you a total of 133 different isometric exercises you can use with no equipment all of which are shown in photographs. It only takes 10 seconds an exercise.