Joining the national guard most likely means your going to Iraq so you will have other things more pressing than PE. Good luck Bro stay safe if you join.
I haven't failed, I've found 10,000 ways that don't work. Thomas Edison (1847-1931)
I second the idea of stretching and ulis in bed at night from 2200 to 2210. Other than that you should be butt tired the rest of the time. Get a top bunk. Try to get one at one end of the barracks or the other and turn on your side. You’ll get no other privacy during the day. Basic training is only 8 weeks, with another 2-4 months for Advanced Individual Training.
By the way, start running and doing push ups now, it will make Basic Training a whole lot easier. When the drill sergeants yell at you, remember it’s nothing personal. Their job is to yell at you for whatever made up reason they can think of. It really does help if you remember that and don’t waste your mental energy figuring out why they are yelling at you. No matter what you do, if they are good at their job, they will yell at you. I loved Basic Training (I know that sounds weird ) Treat the mental aspect as a game and look forward to shooting machine guns and throwing grenades. It’s also nice when your older, knowing you’ve served your country. Hooah