Most self-defense books and videos, and even many seminars and classes, demonstrate fighting techniques and tactics (set-ups) but not the methods or drills for learning them. Few people realize that repeating a technique many times is not always the best way to learn a skill and make it usable. Why? Here is one reason: Doing the whole technique as many times as it takes to learn it well can put too much stress on your body or on your partner’s.