It's not an easy question.. It is really true that most of the bullies are just trying to attract attention or show that they are strong, because they always lived as weights or worse in their family. I got bullied until the age of 14. when I was just a child I was a fatty and other children found it very funny. Later, while growing up I lost some weight but also started to have lots of dandruff on my head, and was marginalized cause people joked on me saying that I was "sick". But all that was nothing: when I finished primary school and switched to secondary school there was a way older guy in my class who hit me every day, at the point that I grew hair in order to hide the bruises in my forehead to my family. Now I'm changed and I'm quite able to defend myself, verbally and physically, and sometimes I see that guy walking in the streets and think "how could I get bullied by that weakling, if now I could crush him in the palm of my hand?"
So, those are just memories, but lots of people get scared when bullied by bigger people. this is not important, if one is self confident, size doesn't matter
