I have linked to two videos. One is about proper breathing and the other is about proper posture when lifting something. Karate may not be lifting something exactly, but it is about hitting things(and in that weight bearing).
What do you guys think?
http://www.youtube.com/user/posturedoc# ... hYUlKgQAzM
http://www.facebook.com/l.php?u=http%3A ... sFP2Czl_XA