A big deal is made these days about learning a martial art for self defence but unless you are up to something that you shouldn’t or are very unlucky you should normally only ever have to defend yourself against some drunk bum or the insecure type who know they are absolute pussies and are so desperate to prove themselves they start bother every where they go, generally trained fighters or people who can handle themselves don’t go about starting fights they are usually very secure in who they are and don’t feel the need to prove anything or tell anyone how “tough” they are (if someone feels the need to announce how tough they are, they are usually far from it).