Joining The Marines - Get Ready For Boot Camp

The first and most important thing to do is get in shape. You cannot afford to show up sloppy, overweight, and out of shape.

What you need to do is focus on three exercises.

Running. Marines run, a lot. So, before leaving for boot camp give yourself a head start and run. The best type of training will work you up to a three mile run starts with simple intervals.
Pull Ups. Pull ups are a graded event in the Corps. You must be able to do as many as possible. There are two ways to do pull-ups. You can have your palms outboard (away from your face) or inboard (towards your face).
Crunches are another graded event. Any abdominal workout will help you. Your recruiter will demonstrate perfect form if you ask him. The key is to be able to do them quickly and efficiently for a minimum of two minutes non-stop without keeling over.