I think we should force all kids in PE to do some kind of weight training programme like stronglifts to help improve fitness and reduce obesity. Obviously there would have to be a way of fixing diet as well, perhaps reducing the amount of calories the canteen can sell to one person a day and banning packed lunches.
Although a lot of you nerds on TSR may hate the idea of it, if you think about it it would actually benefit you a lot since it would actually make the scrawny kids stronger and help level out the playing field so you may not get bogwashed by your bullies daily.
It would be way less intimidating than sports like football anyway since you aren't going to get as many people calling you **** or screaming abuse at you. In my opinion this is the real way to combat the growing obesity/skinnyfat/just being a scrawny runt epidemic we see nowadays.