Okay,so a few minutes ago this dude (we were at 7/11) walked up to my stepdad and said why are you looking at me funny?And he said I'm not,and he never looked at him at all,but the minute he looked away,the dude punched mt step dad and drove off.That's when I realized I couldn't do anything,so I really want to know how to fight with people like this,also know as "stupid people".I really need to know for self defense,so do you know any exercises to make me strong,and help me with my fighting skills?