Their "type" has been around forever, and you can spot them by their T-shirts, school colors and running shoes. They're the teens who live for athletics. One big change from when you were a teen might be that this category isn't just for boys anymore -- many girls are jocks as well.
Sports are a great way for teens to burn off excess energy. Plus, jocks tend to be popular -- at least with many of their peers. Adults also tend to look on these students as leaders among their peers.
Of course, all the adulation can be a problem. Many athletes may look for (and even sometimes get) preferential treatment at school. It can be too easy to put sports before studies. Watch out for jocks who become bullies, and for the win-at-any-cost attitude.