Tsuki (punching), uchi (striking), keri (kicking), and uke (blocking), are the fundamental karate techniques. They are at once the beginning and the final goal of karate. Students can easily learn to perform these basic movements in little more than two months, but perfection in their performance may be impossible. Therefore, students must practice regularly and employ maximum concentration and effort in the performance of each movement. However, practice will not achieve its object if it is undertaken incorrectly. Unless students learn techniques on a scientific basis, under an instructor employing a systematic and properly scheduled training system, their efforts will be in vain. Karate training can be considered scientific only when it is conducted on the basis of correct physical and physiological principles.
Surprisingly, an examination of the karate techniques which our predecessors created and refined through continuous study and practice reveals that these techniques accord with modern scientific principles. However, further refinement is always possible. We must try to analyze our techniques in an unceasing effort to improve.