Glossary Talking about the body requires some specialized language. Some of this is to pin down exactly what is meant. For instance, many dancers talk about their "stomach muscles" when they mean no such thing. Even the term "abs" is very vague and has lead to many dancers doing ab crunches and sit-ups when they actually wanted to tone the TAs. For this reason, where relevant I try and use the Latin names so there can be no misunderstanding. However, when the common name is well known and obvious I may use that. There are also body structures that need to be understood. For instance the difference between muscle, tendon, and ligament. Or the importance of fascia. The more you understand how your body is put together the easier it is to get it to work for you - and minimize the potential damage (for instance by trying to stretch ligaments or incorrectly targeting a stretch). Used loosely to describe the Normal Probability Curve. The Normal Distribution applies to many natural phenomena. Its main characteristic is that most "things" cluster about the mean. However there are a smaller number which are a little less "average" and a very small number that are a long way from "average". For instance, in class most students may have similar hamstring flexibility. Yet one student may be very inflexible and another extremely flexible. bursa Sac or saclike cavity to lessen friction 1 Some are simple cavities filled with fluid eg between the skin and