I'm 14 and joining the marines at 18. How should i prepare.?

You have four more years to join the United States Marine Corps just don't go overboard with it because you have a lot of time before joining, just stay fit. normal workout don't take it serious just stay in great physical shape!

I played football for 4 years, ran track for 2 years (60 meter and 100 meter sprint) and ran a partial cross country schedule all 4 years...I was one of the fittest recruits in my boot platoon. I was also blessed with some intelligence and took all honors classes along with some AP courses....push yourself academically.

Take up sprint running, do most of the chores in your house, study math and science, a little schooling in judo and boxing always being polite to your siblings and parents. When you are 16 add weight lifting and cross-country running.

Start Jogging and doing push up's

Normal work out routine and also research what jobs you will do while in the Corp

Just start working on endurance. You dont want to be overweight at training camp

Do well in school, and stay active in sports.

Avoid being around drugs, alcohol, or criminal activity of any kind.

Get good grades in school