Ok I am very interested in M.A's and have decided I want to do it for various reasons and one has become stronger by the day. 1. At school I get picked on by people and I have bruises all over me. These kids don't hurt me - They even punch me as hard as they can in the head and face. But it's just that they think they can push me around for no reason because they are bigger than me. I would just like be able to defend myself against them not go picking for fights. I would like to keep my M.A out of my personal life because just maybe my speed and strength would give me an advantage. 2. I would like to be able to do a lot of damage, be quick, and do cool-looking moves that actually have usefulness. I also would like to take opponents down to the ground. I was thinking MT. Reason for not doing it here: 3. I am of a strong build. ( I am naturally "tank" and have big muscles but they are weak because I don't train + quit all my previous sports ). But because I've put on weight on top on my natural tankiness, It makes it harder for me to use speed and agility. Also when I try to hit people back they move away too quick. 4. I need a martial art that can help me ( Note: I have a slight back problem. Note: I have a boxing bag as of last week ) Please help me. Jason.