The Navy doesn't have "basic training", that's for disobedient dogs. The Navy has "Boot Camp". I was there 11 years ago, mentally demanding but from what I hear less so now. Just try to go in the warm months. Great Lakes is a frigid place in winter. Physically it is not real bad but I admit I was winded a few times while there. My best advice is to never give up trying anything. If your legs are shot and you can't do one more mountain climber still try know what I mean! If you make a real effort to never give up anything they ask of you even if it is impossible, they will see your pretty squared away and leave you alone pretty much. Also do exactly what you are asked, nothing more, nothing less, attention to detail! Oh one more, don't touch the ornamental weaponry at the galley or any other place for that matter. There was these torpedoes that were all shiny and the like at the galley entrance and I just had to try and spin the screws on it one morning. One of the times I was winded!