My little brother is 10-years-old, and he's really social and hard-working in school. Heck, he can make more friends than I can in a year (exaggeration ^^), but he has this bad habit on playing on the computer.

I have no idea why he thinks he should have fun 24/7, but when he comes home from school, he goes on the computer. After we come from a party, he goes on the computer. When he was just playing with his friends 30 minutes ago or finished watching a movie with the family, the damn computer!

I love my brother and I don't think he's a bad child, but this habit has been going on for a few years. He still gets straight A's and some B's (at this point) and I don't mind him being a gamer, but I don't want him to be that kind of gamer who eventually gains lots of weight and has a sick, lonely life. My brother has noticeable fat around his stomach (he looks skinny until you see his stomach, it's not like a muffin top), and I try to get him to exercise like stretching, jumping jacks, and jogging in place, but he hates it V__V.

Also, I don't really interact with my brother much because I want my alone time plus I have homework, but he doesn't do anything by himself. But he does draw and read in his free time.

The computer he goes on is a hand-built awesome blue-glowing gaming unit that's really cool, and he built it with my dad. They're computer geeks ^^, but I hope that's not the first step of the Gaming Curse (what I'd like to call it.) Help?