Dont freak out! is the best advice we can all probably give you.
Remember, the PJFT is NOT going to be the toughest, most gruelling, daring and scary thing you do during your potential career in the Navy. Just remember the challenge you're about to take on and take a wee step back and congratulate yourself just now ( a pat on the back or a ham-shank, up to you).
I'm 30 and applied in June when my fitness was not altogether too great on the cardio (running) side. I'm a gym goer and have been for the last few years but I've always focused on strength - which inevitably will help me during the stretcher run, Dartmoor, PT drill and other exercises, but running - pfffft, I was not all about that.
I started running around June time when I had made my application and sent it off. Since then I have done my first 10K and bossed it in a good time too. So practice...practice...practice. You can't practice enough. Make sure you are ready and just remember that it's a REALLY worth while 10 minutes of blowing out of your arse.
Lets hope the PT taking you in for the PJFT is as fit (super hot redhead with all the ass) as mine was and gives you that wee extra boost of adrenaline you need to smash it.
I did mine in 10.33, a personal best on the treadmill down from 11.51 two months before.
Started at 13.6 Km/h for 6.5 mins and upped it to 15, rising slowly to 16.4 for the last stretch.
Give it your all, have a good night sleep the night before, no creme egg for breakfast, plenty of water and no cranking your meat the night before either - you'll be fine.
A handy tip too and scientifically sound: Drink beetroot juice (not the pickled shit from the jar) about an hour before your run and you WILL run faster, i promise you.
Best of luck.
GREAT ADVICE , cheers for the tips mate . I'm running about 3-4 times a week ( hopefully this is enough ) and getting a good time . I just think my running technique is fairly bad on the treadmill . You got any tips to improve? And good luck for the PRNC !!