Here is one that you may see in the dark, or with heavy coats on. If the person feet point outwardly he maybe too yang if the tips of the toes point inwardly, he is too yin. If the right foot points slightly inwards, the opposite side of the body is weak to an attack, because there is an illness there. If the left side points out more than the right, in a man there is an imbalance were the left side is robbing the right side energys, and so on. if you go out and find any of these types on the street, you will see the rest of the mans body problems follow this concept. Now woman are Yin (ground chi) there feet when health point almost straight about 3 degrees out board. Men (divine chi)about 20 degrees. normally.

Yes, I start on day one teach these things to new students. if they hear it or not well thats a question. These things were always a part of the martial arts. So you would have to start from day one. But in the begining the student sometimes don't know why they should take it to heart. Most time they don't know why there coming. So the answer is yes I do and do they understand, I don't know!!

Tom  I think you  might also live  in a  colder  climate  than  me to.
Last week  It was warm enough  to were shorts  .This week I had to put on a light  jacket  to   warm  to  wear  heavy  coat.  Latley  we  been have more warm  weather  than cold