In boot camp - You will either get smarter or stronger!
What that means is - if you fuck up(doing dumb shit), you will be doing more pushups/pullups etc. than everybody else.(that's what makes you stronger).
Lets just say I trimmed down in Marine Corp Boot Camp but gain 15lbs. It didn't pay to be a Class Clown (or did it). They didn't think my shit was funny, but my peers did.
Never quit on yourself, your body will shut down when it is time to quit. Don't let your mind make you quit. It's mind over matter, if you don't mind, it don't matter. I was never the fastest, but I always tried MY hardest. That's all you can do!
Good luck, and thanks for serving!!!!!!