As many of you already know, I'm striving to join the Marine Corps once I graduate. I'm trying to spend my next 3 years getting in shape for Boot Camp, but I need to know what type of physical exercise I should do to prepare myself. I've started by walking or jogging nearly everywhere I go, but that doesn't do much. What else could I do over the next 3 years (age 15-18.) to prepare myself for the hell that I hear Boot Camp is?